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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Honeywell HomeMT1 Mechanical Environment Thermostat

Honeywell HomeMT1 Mechanical Environment Thermostat

Product ID: 180609040

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Details

Brand
Honeywell Home
Model name
THR830TEU
Product dimensions
3.5D x 8.3W x
Controller type
Mechanical
Special feature
Automatic
Colour
White

🔥Precise temp control 10-30°C

🔧Easy wall/conduit mounting

⚙️Dual diaphragm sensing tech

Description

🔥 Stay in control, stay ahead—comfort that’s always on point!

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—get set up in minutes, no hassle.
VERSATILE COMPATIBILITY - Seamlessly controls gas boilers, pumps, relays, and zone valves across heating and cooling setups.
PRECISION HEATING CONTROL - Dual diaphragm sensing ensures your space stays exactly where you want it—no more guessing.
ROBUST ANALOG RELIABILITY - Corded electric power with a classic analog dial—no batteries, no downtime, just consistent comfort.

The Honeywell Home MT1 Mechanical Environment Thermostat (THR830TEU) offers precise on/off temperature control for gas boilers and HVAC components, featuring dual diaphragm sensing and a heat anticipator for fast, accurate heating. Easy to install with secure wiring clamps, it operates within a 10-30°C set point range and requires no batteries, making it a reliable, analog solution for modern heating and cooling systems.

Specifications

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

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