ESi Mechanical room thermostat ESRTM

£13.50 Inc VAT
Product Code: ESRTM
3 Year

UK Delivery Information

Next day delivery for orders placed before 2pm on selected products


The ESRTM Mechanical Room Thermostat is an economical and simple to use room thermostat.


To control your room temperature, simply turn the mechanical control dial until your desired temperature is showing at the temperature mark. When you turn the dial past the current temperature, you will hear an audible “click”. This indicates that the system is being turned ON (if calling for heat when turning the temperature up) or OFF (if not calling for heat when turning the temperature down). The temperature can be set between 10°C to 30°C.


The mechanical two wire thermostat is easy and simple to install. It can be either surface or pattress box mounted, with an industry standard back plate, making it an ideal replacement for any 2 or 3 wire thermostat or new build. The ESRTM is double insulated and also has volt free contacts, making it suitable for systems with either a combination or normal boiler. If you have a three wire installation, simply cut back and make safe the neutral, and this two wire thermostat will give you years of faithful service.

  • Volt free contacts
  • Audible click when dial is turned past current temperature and system is turned ON/OFF
  • Surface mounted
  • Large, clear adjustable dial
  • Easy fit backplate
  • Easy to use and quick to install

Brochures / Documents / Specification:


Returns may be made within 14 days of delivery, for unwanted goods and 30 days for faulty/damaged goods.

Please either email us at or click on the link below for a returns form.

All goods must be returned to us intact, unused and in the original packaging. Should you wish for us to arrange collection of the goods the return carriage charge will be deducted from the amount to be refunded.

Returns Cancellation Form


We want all our customers to be happy with their purchases. Returns may be made within 14 days of delivery for unwanted goods or 30 days for faulty/damaged goods. See more details

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