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Sabbath mode

Sabbath mode is a specialized setting available on various household appliances, including ovens, refrigerators, and dishwashers, that modifies their operation to comply with the prohibitions of Jewish law (halakha) during the Sabbath (Shabbat) and certain Jewish holidays (Yom Tov).^[1]^[2] Developed in the late 1990s, with Whirlpool patenting the feature in 1998 in collaboration with kosher certification organizations,^[3]^[4] this feature addresses modern technological issues, such as automatic lights, sounds, timers, or shut-off mechanisms, which could otherwise constitute forbidden actions like igniting a spark or completing an electrical circuit directly.^[1]^[5] It effectively reverts the appliance to a more basic, pre-modern functionality while permitting essential use, such as maintaining food warmth or preservation, through indirect (grama) mechanisms.^[2]^[1] In ovens, Sabbath mode primarily disables the door-activated light, display icons, audible signals, and fans to prevent any electronic responses when the door is opened or closed, which might otherwise violate halachic rules against direct activation.^[1] It also overrides the standard 12-hour automatic shut-off timer, allowing the oven to maintain a set temperature continuously for up to 24 hours or more without user intervention.^[2] On Yom Tov, but not Shabbat, some models permit limited temperature adjustments via a delayed response system, ensuring changes occur indirectly after a set interval to align with permissions for cooking on festivals.^[1] However, it does not enable starting or stopping the oven, placing new food inside on Shabbat, or other direct cooking actions prohibited by halakha, such as bishul (cooking) or shehiyah (leaving food to cook unattended).^[2]^[1] For refrigerators, Sabbath mode typically deactivates interior lights, fans, and alarms triggered by door openings, preventing the activation of circuits that could be seen as completing an electrical task.^[5] It may also pause or adjust automatic defrost cycles and compressor responses to maintain steady cooling without responding to user actions, thus avoiding issues related to indirect electricity use on Shabbat.^[5] Similar adaptations exist for other appliances, like dishwashers that disable end-of-cycle signals or washing machines with modified controls, but implementation varies by manufacturer and requires rabbinical certification for full halachic reliability.^[1]^[2] Overall, while Sabbath mode facilitates observance in contemporary settings, rabbinical opinions vary on the permissibility of specific implementations, with some requiring additional precautions, and users must consult certified guidelines, as not all models provide identical protections and some features are better suited to Yom Tov than strict Shabbat use.^[1]^[2]

Religious and Historical Context

Sabbath Prohibitions in Judaism

The Sabbath, or Shabbat, in Judaism is observed from Friday sunset to Saturday nightfall as a day of rest, based on the Torah's commandment in Exodus 20:8-11 to "remember the Sabbath day, to keep it holy," which prohibits all manner of work (melakha) on the seventh day, emulating God's rest after creation.^[6] This biblical injunction is reinforced in Exodus 35:3, which explicitly forbids kindling a fire in any dwelling on the Sabbath day, establishing a core prohibition against actions that generate heat or light.^[7] Rabbinic tradition, as codified in the Mishnah (Shabbat 7:2), derives 39 specific categories of prohibited labors (melakhot) from the constructive activities involved in building the Tabernacle in the desert, serving as archetypes for forbidden work on Shabbat.^[8] These include planting, plowing, reaping, baking, shearing, washing, carding, dyeing, spinning, stretching fibers, tying knots, sewing, tearing, trapping, slaughtering, flaying, tanning, scraping, cutting, writing, erasing, building, demolishing, kindling fire (mav'ir), extinguishing fire (mechabeh), completing a task (makeh bepatish), carrying in public domains, and others related to creative or transformative acts.^[9] Among these, several are particularly relevant to modern electrical appliances: mav'ir prohibits igniting heating elements or filaments that produce light or heat, akin to biblical fire kindling; boneh (building) may apply to completing an electrical circuit, as it forms a functional structure; and tochen (grinding) or other categories could relate to mechanical processes in devices.^[8] The Talmud expands on these prohibitions, with Tractate Shabbat 73a discussing the severity of kindling fire, deeming it a direct Torah violation punishable by death in biblical times, and extending it to any act that sustains or initiates combustion.^[10] Regarding electricity, introduced long after the Talmud, later rabbinic authorities, drawing on principles from the Shulchan Aruch (Orach Chaim 257-326), interpret it through these lenses: turning on a switch is often viewed as completing a circuit (boneh or makeh bepatish) or sparking an arc akin to fire (mav'ir), rendering it biblically forbidden, while fluorescent or incandescent lights are equated with kindling due to filament heating.^[11] These sections of the Shulchan Aruch systematically outline Shabbat laws, prohibiting direct activation of electrical devices as melakha.^[11] A key distinction in rabbinic law is between direct actions (ma'aseh yadayim), which violate Torah prohibitions outright, and indirect ones (grama), where causation is removed by time, intermediary agents, or natural processes, often permitting the latter under certain conditions to avoid total prohibition.^[12] For instance, pre-setting a timer before Shabbat may qualify as grama if it delays action sufficiently, avoiding direct involvement during the holy day, though sensors or automatic responses triggered by user proximity remain problematic as they resemble direct intervention.^[11] These principles underscore the need for specialized accommodations in appliances to enable observant use without transgressing core prohibitions.

Development and Early Adoption

The development of Sabbath mode originated in the 1990s as appliance manufacturers, including Whirlpool and General Electric (GE), addressed the needs of expanding Orthodox Jewish communities in the United States, where demands for kosher-compliant household products were rising due to prohibitions on certain electrical uses during the Sabbath.^[13] These religious restrictions, rooted in Jewish law against activities like kindling fire or completing circuits, prompted innovations to enable appliance operation without violating halachic principles.^[14] A pivotal collaboration began in 1997 between Whirlpool Corporation and the STAR-K Kosher Certification agency, leading to the creation of Sabbath mode for ovens to ensure compliance with Orthodox Jewish customs.^[14] This effort resulted in Whirlpool receiving a U.S. patent for the technology in 1998, following modifications that overrode automatic shutoffs and disabled interactive features.^[4] GE introduced Sabbath mode in its ovens in 2000.^[15] Initial implementations focused exclusively on ovens, such as Whirlpool's early models certified by STAR-K, before expanding to refrigerators and other devices by the early 2000s as manufacturers refined the technology for broader halachic acceptance.^[14] In Israel, where Sabbath observance is widespread, Sabbath mode has become common in household appliances. By the 2010s and 2020s, features evolved with enhanced modes certified by agencies like the Union of Orthodox Jewish Congregations (OU), and adoption expanded to brands like LG and Bosch, reflecting continued innovation for observant communities.^[16] Post-2000, adaptations emerged in Europe, with brands incorporating Sabbath mode to serve Jewish communities amid growing market demands for religiously accommodating appliances.^[15]

Technical Principles

Core Mechanisms

Sabbath mode operates by implementing software and hardware overrides that disable or delay responses to user interactions and environmental changes, ensuring appliances maintain a pre-set state without initiating new actions during the 25-hour Sabbath period. Central to this is the disabling of automatic features, such as preventing new operational cycles from starting, keeping lights and sensors in a fixed state, and blanking displays or showing only static icons to avoid any visual or auditory feedback that could imply control. These mechanisms are designed to comply with halakhic principles by avoiding direct causation of prohibited labor (melakha), such as kindling or completing circuits, through pre-activation before the Sabbath begins.^[17] Timer-based delays form another foundational element, where appliances are programmed to ignore button presses or adjustments for at least 24 hours after activation, while permitting pre-Sabbath configuration of timers or temperatures. For instance, in ovens, this allows heat to be maintained at a constant level without responding to further inputs, bypassing standard safety shutoffs like 12-hour auto-cycles to support extended operation over Shabbat and Yom Tov. In refrigerators, similar delays ensure that compressors or defrost cycles run on fixed or randomized timers rather than reacting immediately to door openings, preventing unintended energy surges or mechanical adjustments. This approach leverages indirect causation (grama) to align with rabbinic approvals, as outlined by certifying bodies like Star-K. Variations exist by manufacturer, and users should verify rabbinical certification for compliance.^[18]^[17] Sensor overrides are engineered to neutralize responses from doors, handles, or proximity detectors, ensuring no lights activate, fans adjust, or solenoids engage upon interaction—for example, refrigerator interior lights remain off regardless of door status. These overrides often employ mechanical blocks, electronic delays, or software that treats sensor signals as non-events, using randomized timing intervals to further obscure direct user influence. Such designs maintain halakhic compliance by treating electricity as permissible in continuous, pre-activated states without new ignition, per scholarly analyses of biblical and rabbinic prohibitions.^[18]^[19] Energy management in Sabbath mode prioritizes low-power, steady-state operation to evade perceptions of "kindling" or excessive consumption, with circuits configured for minimal draw once initiated. Appliances sustain essential functions like temperature regulation through passive monitoring and infrequent adjustments, avoiding dynamic load changes that could violate restrictions on fire or building (boneh). This continuous operation is deemed non-prohibited when pre-set, as it does not constitute new labor under prevailing halakhic rulings, enabling safe use across devices while upholding the religious imperative to rest from creative acts.^[19]^[17]

User Interface Design

User interface design in Sabbath mode prioritizes minimal and indirect interaction to comply with Jewish prohibitions against performing work, such as completing electrical circuits or activating electronic functions, on the Sabbath or holidays. Permitted user interfaces (PUIs) typically employ non-electronic mechanisms or delayed-response controls that prevent direct user actions from altering appliance states during operation. For instance, buttons are often designed with hold durations, such as pressing and holding specific keys like the number "6" for five seconds, to initiate the mode before the Sabbath begins, ensuring no immediate circuit completion occurs upon activation.^[4] These designs avoid standard touch-sensitive panels by reprogramming keypads to limit functionality, disabling unused inputs to prevent accidental engagement.^[4] Visual and auditory cues are strictly limited to static, non-responsive indicators that do not change based on user interaction, maintaining a constant state to avoid implying any adjustment or monitoring. A single unchanging LED or display message, such as "SAb" on the temperature readout, signals active status without blinking or dynamic updates, while all chimes, alarms, and variable displays are silenced or blanked out.^[4] Door openings trigger no lights or sounds, with any necessary responses—like heating element adjustments—delayed by fixed intervals, such as 30 seconds after closing, to decouple user action from immediate electronic effects.^[4] This approach ensures that incidental contact does not constitute prohibited work under halakha.^[17] The activation process is intentionally sequential and pre-Sabbath only, often requiring a multi-step hold, like pressing "Bake" and "Broil" simultaneously for three to five seconds, after which the mode persists until manually exited post-Sabbath.^[20] Exit follows a similar hold sequence, but during the mode, all controls are locked to ignore inputs, with the appliance resuming normal operation only after deactivation. These interfaces meet general electrical safety standards for appliances.^[17]

Applications in Household Appliances

Ovens and Cooking Devices

In ovens and related cooking devices, Sabbath mode enables the maintenance of a pre-set temperature without user intervention during the Sabbath, overriding standard safety features such as the automatic 12-hour shutoff timer to prevent unintended deactivation.^[14]^[21] This mode is activated prior to the Sabbath, allowing the oven to operate in bake or warm settings at a fixed temperature, typically adjustable only before observance begins, though some models permit limited adjustments on festivals like Yom Tov with a built-in delay mechanism to comply with indirect causation rules (grama).^[14] Heating elements in Sabbath mode function continuously once initiated, cycling on and off as needed to sustain the pre-set heat level without any visual or auditory feedback that could imply direct control, such as changing indicator lights or chimes.^[14]^[21] Convection fans, if present, are often disabled or delayed to avoid perceived adjustments, ensuring the appliance does not respond to door openings or other interactions that might violate prohibitions on work.^[14] Self-cleaning cycles are overridden or prohibited in Sabbath mode to prevent activation of high-heat pyrolytic processes that could engage locks or indicators, requiring users to complete any such operations well before the Sabbath begins.^[22] These features draw from core mechanisms like delayed timers but are tailored for heat generation and retention in cooking environments.^[14] Prominent examples include GE Profile series ovens, which have incorporated Sabbath mode since the late 1990s to support continuous baking compliant with rabbinical standards, disabling displays and tones while maintaining temperatures up to 450°F.^[21]^[23] As of 2023, GE introduced Enhanced Shabbos Mode on certain ranges, which ensures no impact from door openings on heating functions, certified by STAR-K.^[24] Bosch models, such as those in the Benchmark line, feature a "Z Sabbath" option that allows up to 74 hours of operation in bake mode within a 100°F to 500°F range, with all controls locked post-activation to ensure non-responsiveness.^[25]^[26] Both implementations have received certifications from organizations like STAR-K for halachic observance.^[14]

Refrigerators and Freezers

In Sabbath mode, refrigerators and freezers are designed to maintain cooling functionality while preventing any direct or indirect human interaction from triggering electrical or mechanical responses that could violate Jewish Sabbath prohibitions against work. This adaptation ensures that essential food preservation continues uninterrupted, with modifications to key systems like the compressor, lighting, and defrost mechanisms. Manufacturers collaborate with rabbinical authorities to certify compliance, focusing on passive operation during the 25-hour observance period.^[14] A primary feature addresses door openings, which in standard operation can cause the compressor to restart sooner to compensate for warm air influx, potentially constituting indirect labor. In Sabbath mode, a built-in delay prevents the compressor from turning on immediately after the door is opened, typically implementing a short pause such as 15-25 seconds before responding to temperature calls, thereby decoupling the system's reaction from user activity.^[14]^[27] Interior lighting is another critical adjustment, as door-activated bulbs could be seen as creating or extinguishing light, a prohibited action. Users select the light state—either permanently on or off—prior to activating Sabbath mode, after which no sensors or switches respond to door movements, keeping the lighting static throughout the period. This setup avoids any change triggered by access, maintaining halachic neutrality.^[14]^[28] Ice makers and dispensers pose risks due to their involvement in grinding, crushing, or dispensing actions, which may involve motors or solenoids activated by user input. In Sabbath mode, these features are fully disabled to prevent such operations; for instance, in Samsung models, the dispenser locks and becomes unresponsive, while the ice maker halts production to eliminate any potential Sabbath violation.^[14]^[29]^[20] The defrost cycle, essential for preventing frost buildup, is reprogrammed to run on a fixed timer based solely on clock time, ignoring door activity or temperature fluctuations from openings. This clock-driven approach ensures the heating element activates at predetermined intervals without user influence, aligning with guidelines from kosher certification bodies like STAR-K, which emphasize non-reactive operation.^[14]^[20]

Lighting and Display Systems

In Sabbath mode, lighting systems in household appliances and dedicated fixtures are configured to maintain a fixed operational state, preventing any automatic activation or deactivation that could be interpreted as kindling or extinguishing a flame, which is prohibited under Jewish law. Once activated before the Sabbath, lights remain either on or off as preset, with mechanisms such as door switches or motion sensors disabled to avoid unintended changes. For instance, in refrigerators and ovens, interior lights do not illuminate when doors are opened, ensuring no response to user interaction during the observance period.^[14]^[28] This fixed state extends to standalone lighting fixtures designed for Sabbath compliance, such as Shabbos lamps, which employ mechanical adjustments like sliding levers or repositionable shades to control light output without electronic intervention. These devices allow users to set the illumination level prior to the Sabbath, after which the light remains static, avoiding any form of electrical circuit completion or interruption. Examples include the Sunlite ShabBulb, which uses a simple slide mechanism to dim or conceal the bulb, and the KosherLamp MAX, where tilting the fixture redirects light without altering power flow. Such designs prioritize halachic permissibility by relying on pre-set physical configurations rather than dynamic controls.^[30] Display systems in appliances, including LCD and LED panels, undergo blanking or minimization during Sabbath mode to eliminate dynamic visual changes, such as updating clocks or status indicators, which might constitute forbidden creative work. Screens typically show only essential static information, like a frozen time display or no output at all, with backlighting dimmed or extinguished to prevent any perceptible alteration. In General Electric refrigerators, for example, display panels are disabled, and LED interior lights remain continuously dimmed if preset to on, while Samsung models ensure panels and indicator lights do not respond to inputs or door openings. Similarly, Maytag ovens in Sabbath mode blank the display except for a minimal indicator like "SAb," suppressing all icons, tones, and updates.^[20]^[31]^[32] Some lighting systems incorporate alternative triggers like clapper or voice activation for general use, but these are disabled or deemed impermissible in strict Sabbath mode implementations to avoid direct causation of electrical changes, aligning with rabbinical guidelines that prohibit sound- or speech-based controls as indirect but forbidden actions. In hotel settings accommodating Sabbath observers, lights are often left in their pre-set state by staff, with no interactive switches engaged to maintain compliance without specialized fixtures. Core sensor-disabling mechanisms from broader appliance Sabbath modes are applied similarly here, ensuring lights ignore environmental cues like motion.^[33]^[34]

Other Appliances

Sabbath mode in dishwashers typically disables interior and control panel lights, sounds, and sensors to prevent inadvertent activation or visual feedback during operation, allowing users to run pre-programmed cycles initiated before the Sabbath without further interaction. For instance, Whirlpool dishwashers with Sabbath mode can be scheduled via an app to start at a designated time, continuing a fixed program while overriding normal pauses or door-open detections that might trigger alerts. Cove dishwashers incorporate a similar Sabbath mode compliant with STAR-K guidelines, focusing on control lockout and light suppression to support non-interactive use of preset cycles.^[35]^[36] In washing machines and dryers, Sabbath mode implementations are less common, following analogous principles by locking controls to prevent start, stop, or cycle adjustments where available, enabling timed operations set prior to the Sabbath to run uninterrupted, such as delayed hot water intake or extended drying without sensor-based halts. These features ensure mechanical cycles, including spins, proceed on a fixed schedule without user input or automatic overrides that could imply direct causation.^[37] A variant of Sabbath mode appears in building elevators, known as Shabbat elevators, which operate as a communal system rather than a consumer appliance; in this mode, the elevator continuously cycles up and down, automatically stopping and opening doors at every floor to allow entry and exit without pressing buttons or selecting destinations. This design adheres to halachic requirements by avoiding direct user-initiated actions, though rabbinical authorities note variations in permissibility based on speed and stopping patterns. STAR-K guidance emphasizes that such elevators must be pre-activated before the Sabbath to comply with indirect causation principles.^[38] Smart home devices, particularly thermostats like the Nest, adapt Sabbath mode through pre-configuration to maintain a fixed temperature setpoint without relying on motion sensors, Wi-Fi updates, or app interactions that could activate displays or adjustments during the Sabbath. Users disable proximity and occupancy detection beforehand, setting a static schedule to hold the temperature steady, thus preventing automatic responses to presence or environmental changes. Similar configurations apply to Ecobee models, where standby modes are overridden and sensors taped or deactivated to ensure passive operation.^[39]^[40]

Standards and Adoption

Rabbinical Approvals

Rabbinical approvals for Sabbath mode features are essential to ensure compliance with halachic prohibitions against creative work on Shabbat and Yom Tov, with major kosher certification agencies like the Orthodox Union (OU) and Star-K providing certifications after rigorous evaluations. These agencies oversee modifications to appliance software and hardware, including tests to confirm that modes prevent direct user interactions that could violate laws such as muktzeh or completing circuits. Star-K, for instance, collaborates with manufacturers to certify devices that disable responsive elements like lights and displays, ensuring sustained operation without automatic shutoffs. OU similarly certifies enhanced modes that incorporate safeguards like the Shabbos Keeper for automated compliance.^[41]^[16] Key rabbinical rulings emerged in the 1990s, notably through teshuvot by Rabbi Moshe Heinemann, Star-K's rabbinic administrator, who approved delayed responses in Sabbath mode as permissible grama—indirect causation that avoids direct labor on Yom Tov. These responsa permitted temperature adjustments with built-in delays of at least 15 seconds, distinguishing them from immediate actions forbidden on Shabbat. Controversies arose over digital interfaces versus analog controls, with some poskim questioning whether digital keypads or displays inadvertently enable prohibited acts like ohel (enclosure) or molid (creating something new), leading to stricter requirements for non-responsive digital elements in certified modes.^[42]^[43] Denominational variations influence approval standards, with Orthodox Judaism maintaining strict interpretations that prohibit features like LED activations, viewing them as potential incitement of electricity use akin to kindling fire. Conservative Judaism adopts more lenient approaches, permitting certain electrical interactions if they do not resemble traditional melachot (prohibited labors), thus allowing broader Sabbath mode functionalities without disabling all visual indicators.^[14]^[44] Post-2010 guidelines have addressed emerging smart appliances and IoT integrations, with agencies like Star-K classifying potential remote or sensor-based activations as grama to mitigate grama-related concerns during connectivity. These updates ensure that networked devices in Sabbath mode isolate functions, preventing indirect violations while accommodating modern technology.^[41]^[44]

Manufacturer Implementations

Whirlpool pioneered the development of Sabbath mode through a collaboration with the STAR-K kosher certification agency, launching the feature in 1997 on KitchenAid ovens and receiving a patent for it in 1998.^[14] General Electric (GE) followed suit, integrating Sabbath mode into its cooking and refrigeration products by the early 2000s, working with agencies like the Orthodox Union (OU) to ensure compliance.^[20] Other major manufacturers, including Electrolux and Samsung, have since adopted the feature across their appliance lines, with Electrolux incorporating it into ovens, wall ovens, and refrigerators, often under brands like AEG in Europe.^[45]^[31] By the 2020s, Sabbath mode had become widespread in the U.S. market, with approximately 85% of built-in ranges and nearly two-thirds of wall ovens equipped with the feature as of 2021, reflecting strong demand in premium segments driven by rabbinical endorsements.^[46] Adoption is particularly robust in the United States and Israel, where certification bodies like STAR-K maintain extensive lists of compliant models for ovens, refrigerators, and freezers.^[41] In Europe, integration is growing through brands like Electrolux and AEG, which include Sabbath mode in their product specifications to meet regional kosher needs.^[47] Adoption remains more limited in Asia, despite offerings from global players like Samsung, due to smaller Jewish populations and market focus on general consumer features.^[48] In the 2020s, manufacturers have introduced enhancements tying Sabbath mode to smart home ecosystems, such as Samsung's integration with the SmartThings platform, which allows users to activate or deactivate the mode remotely via app before observance periods.^[49] These updates address rabbinical requirements for indirect controls while expanding compatibility with broader home automation setups. However, implementation gaps persist, particularly in budget-tier models where the feature is less consistently available compared to premium lines, and in non-traditional areas like electric vehicles or full-home automation systems, where post-2020 expansions remain nascent and uncertified.^[50]

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Jan 6, 2022 · Unlike standard Shabbos modes, the Enhanced Shabbos Mode fully controls door switches, including safety shutoff, lights, buttons and sensors so ...Missing: mechanisms | Show results with:mechanisms<|control11|><|separator|>
[43]
Getting Certified Kosher: How it Works
The 5 steps are: application, consultation, quote, facility visit/ingredient evaluation, and signing the agreement/receiving certificates.
[44]
None
### Summary of Rabbi Heinemann's Teshuva (https://www.star-k.org/articles/wp-content/uploads/2015/07/oventeshuva.pdf)
[45]
The “Sabbath Mode” Oven Controversy by Rabbi Chaim Jachter
Jul 29, 2018 · Since Sabbath mode ovens allow for raising and lowering the temperature in an oven by means of Grama, indirect action, it is necessary to review ...<|control11|><|separator|>
[46]
[PDF] Page | 1 Daniel Nevins, Electricity and Shabbat
May 31, 2012 · 21 For example, dozens of Orthodox rabbis have endorsed a special light switch that is designed to avoid forbidden labor and is promoted under ...
[47]
Ovens - What is Sabbath mode and how do I use it? - Electrolux
Sabbath mode disables all audible tones or visual display changes on the oven control. Bake heating is the only cooking feature available while in the Sabbath ...
[48]
Sabbath mode: How some appliances are set up for religious ...
Apr 17, 2023 · These appliances have what's called “Sabbath mode,” which is a way for people who observe the Sabbath to use them without violating religious laws.
[49]
[PDF] aeg.com\register - electrolux-medialibrary
3.7 Setting mode. The Setting mode allows you to enable or disable the ECOMETER indicator, the Rest mode, the Sabbath mode, to reset the appliance factory ...
[50]
Activate Sabbath mode on your Samsung refrigerator
Apr 16, 2025 · To do so, open SmartThings and select your refrigerator. Next, navigate to Menu, tap Refrigerator options, and then tap Sabbath mode.Missing: maker | Show results with:maker
[51]
Sabbath Mode - Devices & Integrations - SmartThings Community
Jul 31, 2024 · Models which have both Sabbath mode and SmartThings can turn Sabbath mode on or off in SmartThings. To do so, open SmartThings and select your refrigerator.Missing: adoption Asia
[52]
https://www.donsappliances.com/blog/sabbath-mode-appliances