Manufacturer photo (series)Series photoBoiler thermostats
Moes ZHT-SR-GC Star Ring Zigbee gas/water boiler thermostat, 5 A, white
- Relay output type
- Dry (volt-free) contact
- Hub
- Yes
- Boiler control method
- On/off (contact)
Moes · WHT-S02-GC
Wi-Fi, Matter · MOES; also Apple Home, Google Home, Alexa, SmartThings via Matter
Matter features depend on the model and firmware.
Wi-Fi, Matter
Check the supported network band.
Manufacturer image shared by the series. Check the colour, dimensions and variant in the model name and specifications.
Fires your gas or water boiler on a 42-slot schedule and by voice from Apple Home, Google Home and Alexa — no hub, just WiFi.
Connects directly to a 2.4 GHz Wi-Fi router; Apple Home may need its own home hub for remote access.
We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.
The right choice starts with specifications
SKU: MWHT-S02-GC-WH-MS · Document model: WHT-S02
Specifications checked against the linked manufacturer documents.Checked 18 October 2026
Relay output type — what it meansA dry (volt-free) contact simply closes two wires with no voltage of its own — this is how most gas boilers' room-thermostat input is wired. A 230 V output feeds live to a load: pump, actuator or electric heater. The boiler's input wiring is shown in its manual. | Dry (volt-free) contactGC version: the wiring diagram marks the output 'Dry Contact' [1] |
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Thermostat power source — what it meansWhere the device gets its power: 230 V mains, an adapter, USB, batteries or a built-in battery. | 230 V mains95–240 V AC, 50/60 Hz. The manual also mentions a 24 V DC/AC execution — the actual voltage is printed on the back of the thermostat [1] |
Maximum contact current — what it meansThe current the relay contact can carry. A boiler's room-thermostat input usually needs only a fraction of an amp; headroom matters if the thermostat also switches a pump or actuators. | 5 AFor the GA and GC versions; the GB version (electric floor heating) is rated 16 A [2] |
Supply voltage — what it meansThe supply voltage (and current, if stated) as the maker gives it. It must match your mains or adapter. | 95–240 V AC, 50/60 HzA 24 V DC/AC execution is also listed; check the marking on the housing [1] |
Rated power — what it meansThe rated or maximum power draw from the spec sheet. It sets the load on the socket and the energy use. | 1.5 WLess than 1.5 W [2] |
Boiler control method — what it means'On/off' means the thermostat simply switches the boiler on and off by temperature; it suits any boiler with a room-thermostat input. OpenTherm means the thermostat tells the boiler the flow temperature it needs and the boiler modulates its output smoothly; this needs an OpenTherm-compatible boiler. | On/off (contact)The boiler is switched on/off via the dry contact; OpenTherm support is not stated by the maker [1] |
|---|---|
Connectivity — what it meansThe wireless link or network the device uses. Wi-Fi connects straight to the router; Zigbee, Thread and Bluetooth Mesh work through a hub or gateway. | Wi-Fi, MatterMatter over 2.4 GHz Wi-Fi. Phone Bluetooth is needed when first adding it in the MOES app [2] |
Hub required — what it meansWhether the device needs a separate hub, gateway or coordinator to work in a smart home. If so, it is sold separately unless stated otherwise. | No hub neededConnects directly to a 2.4 GHz Wi-Fi router; Apple Home may need its own home hub for remote access [1] |
Matter support — what it meansWhether the device supports the Matter standard, directly or through a bridge. Matter lets you add it to Apple Home, Google Home, Alexa and Home Assistant. | Built-in [2] |
Home Assistant — what it meansHow the device connects to Home Assistant: a built-in integration, a Zigbee coordinator, Matter or the maker’s cloud integration. | Via a separate integrationVia the Home Assistant Matter integration; the maker itself does not mention Home Assistant [2] |
Voice assistants — what it meansWhich voice assistants the maker states the device works with. This usually needs an internet connection and, for Zigbee devices, a hub. | Amazon Alexa, Google Assistant, Apple Home (Siri)Samsung SmartThings compatibility is also stated [1] |
| Max. transmit power | 16 dBm [1] |
App — what it meansThe maker’s app used to set up and control the device. | MOES; also Apple Home, Google Home, Alexa, SmartThings via Matter [1] |
Sensor modes — what it meansWhich temperature the thermostat regulates by: air (the built-in sensor), floor (a remote probe in the screed), or air with a maximum floor-temperature limit. | Air (built-in sensor), floor (remote probe), air with floor limitThe 'floor' and 'air + floor limit' modes work only with the remote NTC probe; the GC version does not include it (the manual lists the probe as optional and warns against third-party probes) [1] |
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Sensor calibration — what it meansHow many degrees the built-in sensor reading can be offset by hand if it reads higher or lower than a room thermometer, e.g. −9…+9 °C. | −9 °CFor the built-in sensor; factory value −3 °C [1] |
Temperature accuracy — what it meansPermitted error of the built-in sensor, ± °C. A value of 1 means that at 21 °C in the room the thermostat may show anything from 20 to 22 °C. | 1 °C [2] |
| Sensing element | NTC3950, 10 kΩ [2] |
| Temperature display range | 5–70 °C [2] |
Remote probe included — what it meansWhether the box includes a wired remote temperature probe. It is usually not needed to run a boiler by air temperature; it helps when the thermostat is not where the temperature should be measured, or for water underfloor heating. | NoThe floor probe is included only with the GB version [2] |
|---|---|
Manufacturer warranty — what it meansThe warranty period the maker states. Confirm warranty terms in Moldova with the seller. | 24 months [1] |
Package contents — what it meansWhat comes in the box, per the maker. | Thermostat, 2 screws, user guide [2] |
Setpoint range — what it meansThe temperature you can set, from minimum to maximum. The lower limit matters for keeping the home frost-free while nobody is in. | 5–35 °CFactory range. In the advanced settings the lower limit can be set within 5–15 °C and the upper limit within 15–45 °C [2] |
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Hysteresis (dead band) — what it meansHow far the temperature must drift from the setpoint before heating switches on again. A smaller value gives a steadier temperature but more frequent relay and boiler cycles. Shown as the adjustable range. | 1–5 °C'Deadzone temperature' setting, default 1 °C [1] |
Weekly schedule — what it meansHow the schedule stored in the device is organised: each day separately, 'weekdays + Saturday + Sunday', or 'weekdays + weekend'. 'App only' means the hub or cloud runs the schedule, so it stops working without a connection. | Each day separately (7 days)The manual sets the programme separately for each weekday; the official product image also lists 5+2 and 6+1 modes [1] |
Schedule periods per day — what it meansHow many times a day the device changes the setpoint by itself following the schedule. A typical weekday has 4–6 changes: wake-up, leaving, coming back, night. | 66 periods per day, up to 42 per week [1] |
Functions — what it meansExtra modes stated by the maker: child lock, frost protection (the boiler starts if the home gets too cold), open-window detection, eco mode, holiday mode, boost heating and keeping settings after a power cut. | Child lock, frost protection, eco mode, settings kept after power lossFrost protection is the 'Low temperature protection' setting, 0–10 °C (off by default); eco mode with a 0–30 °C eco temperature; settings are kept after a power cut [1] |
On-device controls — what it meansHow you operate the device without a phone: touch buttons on glass, mechanical buttons or a rotary knob (ring). | Touch buttons [1] |
| Floor temperature limit (overheat protection) | 10–70 °C'High temperature protection' setting, default 45 °C; works with the remote probe [1] |
| Frost protection threshold | 0–10 °CDefault 0 — off [1] |
| Clock error | < 1 % [2] |
Neutral wire (N) — what it meansWhether the wall box needs a neutral wire. Older wiring often brings only the live wire to the switch; then pick a model that works without N. | RequiredIn the GC diagram power is connected to the L and N terminals [1] |
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Mounting — what it meansHow and where the thermostat is installed. In Moldova round Ø60 mm wall boxes (the European standard) are the most common; square 86 × 86 mm boxes are rarer. Surface and desktop versions need no wall box. | Round Ø60 mm wall box, Square 86 × 86 mm wall box [1] |
| Housing material | PC + ABS (fire-retardant)Front panel: glass per the product page, acrylic per the manual [1] |
Dimensions — what it meansThe device’s size in millimetres as the maker states it. Check that it fits the wall box, niche or shelf. | 88 × 88 mm; 12.4 mm above the wall; in-wall part 50 × 50 mm [1] |
| Terminal wire size | 2 × 1.5 mm² or 1 × 2.5 mm² [1] |
Certifications — what it meansStandards and certifications the maker lists for this model (for example CE, RoHS, Zigbee 3.0, Matter). | CE (2014/35/EU, 2014/30/EU, 2011/65/EU, 2014/53/EU) [1] |
Colour — what it meansThe housing colour of this model. Other colours in the same series are separate products. | WhiteColour per the SKU (WH) and the GC version image [2] |
|---|---|
| Manufacturer variant | GC — water/gas boiler, 5 A (MWHT-S02-GC-WH-MS) [2] |
Operating temperature — what it meansThe air temperature range the device is rated for. The lower limit matters outdoors, on balconies and in unheated rooms. | 0–45 °C [2] |
|---|---|
Operating humidity — what it meansThe rated relative humidity range, non-condensing. | 5–95%Non-condensing [2] |
| Storage temperature | −5…45 °C [2] |
We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.
A website order is submitted for confirmation without charging your card. The payment method and final amount are agreed with a manager before payment.
The warranty is at least 12 months. The exact period and conditions for equipment and installation work are stated in the sales documents and the accepted proposal. Further support is agreed for each project.
Current conditions are published on the Return policy page. Email office@casasmart.md with your order number for the steps relevant to your situation. Statutory consumer rights continue to apply.
In your home
One thermostat cannot account for a sunny room, a closed bedroom and different schedules. Zoning helps avoid overheating and unnecessary heating.
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