Moes · ZHT-SR-GC

Moes ZHT-SR-GC Star Ring Zigbee gas/water boiler thermostat, 5 A, grey

Name: Moes ZHT-SR-GC Star Ring Zigbee gas/water boiler thermostat, 5 A, grey
Brand: Moes
SKU: ZHT-SR-GC-GY-MS
Price: 1499 MDL
Availability: InStock

1,499 MDLIn stock

Boiler thermostats

Zigbee

Manufacturer image shared by the series. Check the colour, dimensions and variant in the model name and specifications.

1,499 MDLIn stock

What it needs to work

Maker: 'ZigBee gateway is required, please purchase in addition'.

Suitable gateways and hubs

Buy with installation

Check compatibility

Relay output type: Dry (volt-free) contact
Connectivity: Zigbee

A grey Star Ring thermostat with a rotary ring and round screen runs a gas or water boiler over Zigbee 3.0 via a separate gateway: schedule, eco and access from Tuya, Alexa and Google Home.

36 specifications from manufacturer documents

We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.

The right choice starts with specifications

Device passport

SKU: ZHT-SR-GC-GY-MS · Document model: ZHT-SR

Specifications checked against the linked manufacturer documents.Checked 18 October 2026

Power5

Relay output type — what it means A 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 diagram marks the output 'Dry Contact', Imax 5 A [1]
Thermostat power source — what it means Where the device gets its power: 230 V mains, an adapter, USB, batteries or a built-in battery.	230 V mains95–245 V AC, 50/60 Hz [2]
Maximum contact current — what it means The 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 is rated 16 A [2]
Supply voltage — what it means The supply voltage (and current, if stated) as the maker gives it. It must match your mains or adapter.	95–245 V AC, 50/60 Hz [2]
Rated power — what it means The 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]

Connectivity and compatibility10

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)On/off via the dry contact; OpenTherm is not stated by the maker [1]
Connectivity — what it means The 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.	ZigbeeZigbee 3.0 (IEEE 802.15.4, 2.405–2.480 GHz) [1]
Hub required — what it means Whether the device needs a separate hub, gateway or coordinator to work in a smart home. If so, it is sold separately unless stated otherwise.	Hub requiredMaker: 'ZigBee gateway is required, please purchase in addition' [2]
Matter support — what it means Whether 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.	Not stated by the manufacturer
Home Assistant — what it means How the device connects to Home Assistant: a built-in integration, a Zigbee coordinator, Matter or the maker’s cloud integration.	Via a Zigbee coordinator or hubZigbee 3.0); the maker itself does not mention Home Assistant [1]
Voice assistants — what it means Which voice assistants the maker states the device works with. This usually needs an internet connection and, for Zigbee devices, a hub.	Amazon Alexa, Google AssistantThrough the Zigbee gateway and the MOES/Tuya cloud [2]
Radio module	ZT3L [2]
Radio frequencies and transmit power	2.405–2.480 GHz (IEEE 802.15.4) [2]
Max. transmit power	20 dBm [2]
App — what it means The maker’s app used to set up and control the device.	MOES (per the manual Tuya Smart / Smart Life also works) [1]

Measurement and detection5

Sensor modes — what it means Which 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 need the remote NTC probe; the GC version does not include it (optional per the manual) [1]
Sensor calibration — what it means How 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.	Not stated by the manufacturer
Temperature accuracy — what it means Permitted 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	5–99 °C [2]

Package contents3

Remote probe included — what it means Whether 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 external sensor cable is included only with the GB version [2]
Manufacturer warranty — what it means The warranty period the maker states. Confirm warranty terms in Moldova with the seller.	24 months [1]
Package contents — what it means What comes in the box, per the maker.	Thermostat, 2 screws, user guidePer the manual; the product page does not list the screws [1]

Control and features8

Setpoint range — what it means The temperature you can set, from minimum to maximum. The lower limit matters for keeping the home frost-free while nobody is in.	5–35 °CThe manual's function section says 5–45 °C, and the upper limit is adjustable in the app (45 °C on the screenshot) [2]
Hysteresis (dead band) — what it means How 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.	Not stated by the manufacturer
Weekly schedule — what it means How 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 official image shows a per-weekday (Mon–Sun) schedule set in the app; the manual shows a default programme identical for all days [2]
Schedule periods per day — what it means How 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.	4 [1]
Functions — what it means Extra 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, eco modeEco mode: default eco temperature 30 °C (changed in the app). The app also has a temperature limit ('High protect temp.') [1]
On-device controls — what it means How you operate the device without a phone: touch buttons on glass, mechanical buttons or a rotary knob (ring).	Rotary knob or ringRotary ring with a round screen; pressing the screen opens the menu and confirms [1]
Clock error	< 1 % [2]
Menu languages	9: English, Chinese, Spanish, French, Italian, Polish, German, Russian, Portuguese [2]

Housing and installation5

Neutral wire (N) — what it means Whether 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]
Mounting — what it means How 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.	Square 86 × 86 mm wall box, Round Ø60 mm wall box [1]
Housing material	PC + ABS (fire-retardant) [2]
Dimensions — what it means The device’s size in millimetres as the maker states it. Check that it fits the wall box, niche or shelf.	Frame 86 mm; total depth 55.5 mm (drawing also shows 16 mm and 30 mm depth segments); ring 46.3 mm; in-wall block height 48.4 mm [1]
Certifications — what it means Standards 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]

Model and version2

Colour — what it means The housing colour of this model. Other colours in the same series are separate products.	Grey'Grey' variant on the maker's page (SKU ZHT-SR-GC-GY-MS) [2]
Manufacturer variant	GC — water/gas boiler, grey (ZHT-SR-GC-GY-MS) [2]

Operating conditions1

Storage temperature	0–45 °C [2]

Differences between manufacturer documents

The table shows the primary document’s value. Below is what other manufacturer documents state; we check the supplied version’s label before sale.

Schedule periods per day: The product page says 'up to 48 schedules during one day', which contradicts the manual

Manufacturer documents

Clear purchase details

Delivery and stock

We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.

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Warranty and documents

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.

Can I return the product?

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.

Delivery, payment and returns

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