Heatit Z-TRM3 frontal for gallery

Heatit Z-TRM3

Heatit Z-TRM3 is an electronic thermostat for electrical floor heating, designed to be mounted in a standard flush box. The thermostat has a built-in Z-Wave chip that can be connected with Home Automation systems. Heatit Z-TRM3 is equipped with a single-pole switch and fits into System 55 frames. The thermostat can withstand a load of max 16A /3600W at 230V. The thermostat may be used for water based heating if the thermostat is linked to the Heatit Z-Water.

Article numbers 54 305 99 (White) and 54 305 98 (Black)



Due to the fact that many of our thermostats are available in both white and black, you may combine frames and fronts as you please. Choose a black frame with a white front (or the other way around) for an edgy look, or go for the traditional all-white or all-black.


Heatit Z-therm2 White RAL 9003

Color and design matching the Schneider Exxact series.


Heatit Z-Therm2 RAL 9011

Design matching the Schneider Exxact series.


  • Floor sensor
  • Internal room sensor
  • External room sensor (connected by cable)
  • Temperature limiter
  • SmartStart
  • Weekly program/setback via gateway
  • Temperature read out in gateway
  • Firmware update (OTA)
  • Power metering
  • Relay status LED
  • Single pole switch
  • Lock mode/child lock
  • Calibration
  • 5 associations
  • Supports encryption mode: S0, S2 Authenticated Class, S2 Unauthenticated Class

This product is a security-enabled Z-Wave Plus product with encryption. The product must be used with a security-enabled Z-Wave Controller in order to fully utilize the product.

Technical data

Protocol Z-Wave – 868,4MHz
Chip Z-Wave 500 chip
Rated voltage 230V 50/60Hz
Max load 3600W (resistive load) 750W self-limiting heating cable
Max current 16A
Power consumption <2,0W
Ambient temperature 0°C to 40°C (during operation)
Temperature range 5°C to 40°C
Hysteresis 0,3°C to 3,0°C (default 0,5°C)
Compatible with NTC sensors with values 10, 12, 15, 22, 33 and 47 kΩ @ 25°C
IP Code IP 21
Approvals Z-Wave Plus, CE, EN 60730-1, EN 60730-2-9, EMC 2014/30/EU, RoHS 2011/65/EU, LVD 2014/35/EU



Download documents

Documents can also be found here on manuals.heatit.com

Heatit Z-TRM3 Plastic kits
Art. no. Art. no. Product Z-Wave frequency
54 305 99 54 304 46 (plastic kit) Heatit Z-TRM3 White thermostat EU 868,4 MHz
54 305 98 Heatit Z-TRM3 Black thermostat EU 868,4 MHz


Art. no. Product
54 301 08 Floor sensor  Ø3mm  6 meters  NTC 10 kΩ
54 301 07 Floor sensor  Ø4mm  3 meters  NTC 10 kΩ
54 301 28 External room sensor  NTC 10 kΩ
54 301 27 External enclosed sensor  IP 20/54

The product must be installed in accordance with the current version of the installation guide and national building codes. See the installation guide for further information.

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