Underfloor heating thermostat

WARMCOIN W4-WiFi Smart Thermostat for Electric Underfloor Heating, 16 A / 3500 W

Weekly scheduling plus smartphone control, with both air and floor temperature sensors.

The WARMCOIN W4-WiFi is a wall-mounted smart thermostat for electric underfloor heating that holds your set temperature and switches the system on according to a weekly schedule. Its built-in 2.4 GHz WiFi receiver pairs with the U-Smart-AI app for iOS and Android. An external NTC floor sensor with a 3 m lead is included.

Phone control through the U-Smart-AI app

A single smartphone can manage an unlimited number of these thermostats, and one thermostat can be operated from several devices in the household. Connection is to a 2.4 GHz WiFi network, with the app available for iOS and Android.

Two sensors: air, floor or combined control

The built-in sensor reads the air temperature around the thermostat, while the remote NTC probe sits in the screed and tracks the floor. In combined mode the floor probe acts as a limiter that protects the floor covering, with switching driven by the air sensor.

Weekly schedule for lower running costs

Time periods are set per day and hour so the heating runs at a reduced temperature while nobody is at home. A large digital LCD display and a button lock keep the settings safe from accidental changes.

16 A switching for cable, mat or infrared film

The unit switches loads up to 3500 W at 230 V AC, covering typical heating cables, mats and infrared film in a bathroom, kitchen or living room. The body fits a standard 86 x 86 mm wall box.