Hello, thank you for your interest in our products. The information in the installation guide states, 230Vac, 50 -60Hz. If you need further assistance from our side, please contact our consumer support team by submitting a request on our GetConnected HoneywellHome Website. Thank you.

Hi. Is the high and low temperature difference adjustable?

There is no high and low difference. You set stat to what you want, ie 20 degrees, if temperature is lower, boiler come on; raises temperature to 20 degrees; thermostat switches off (temperature reached); boiler switches off. If you set to 14 degrees and temperature is consistently above that..... boiler will not come on.

Honeywell thr830teumti is it mains only, also has it got frost protection thanks.

Hello, thank you for your interest in our products. Please be advised the THR830TEU thermostat is mains only. Also, please be advised all Honeywell Home thermostats have frost protection. If you need further assistance from our side, please contact our consumer support team by submitting a request on our Livewell HoneywellHome Website. Thank you.

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🔥 Stay in control, stay comfortable — the thermostat that works as hard as you do.

WIDE OPERATING RANGE - Set your comfort zone anywhere between 10°C and 30°C, with reliable operation from 0°C to 40°C.
SMART HEAT ANTICIPATOR - Built-in heat anticipator adapts to fast heating systems for ultra-close temperature regulation.
EFFORTLESS INSTALLATION - Mounts directly on wall or conduit box with secure wiring clamps—setup in minutes, no hassle.
VERSATILE COMPATIBILITY - Seamlessly manages gas boilers, pumps, relays, and zone valves for all heating/cooling systems.
PRECISION HEATING CONTROL - Dual diaphragm sensing ensures your space stays exactly where you want it, no guesswork.

The Honeywell HomeMT1 Mechanical Environment Thermostat (THR830TEU) is a robust, analog on/off thermostat designed for precise temperature control in gas boiler and HVAC systems. Featuring dual diaphragm sensing, easy wall mounting, and a heat anticipator for fast heating response, it offers a 10-30°C set point range and operates reliably between 0-40°C without batteries. Ideal for professionals seeking dependable, no-fuss climate control.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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HK$436

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Hong Kongstore

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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The delivery time was excellent, and the packaging was secure.

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Part number	THR830TEU
Item Weight	280 g
Product Dimensions	8.3 x 3.5 x 8.3 cm; 280 g
Item model number	THR830TEU
Colour	White
Style	On/Off Mechanical
Power source type	Corded Electric
Voltage	230 Volts
Item Package Quantity	1
Display style	analog
Plug profile	Wall Mount
Special Features	Automatic
Specific uses	Boiler
Included components	One thermostat and the instruction manual
Batteries Required?	No

Honeywell HomeMT1 Mechanical Environment Thermostat

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