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What is z-wave?

Z-Wave is a wireless communication protocol for managing all "smart" devices in your home.
Z-Wave is the language these units use to communicate with each other.

What is z-Wave Plus?
Z-Wave Plus is a certification which confirms that a device is up to date with the newest Z-Wave Plus standards and contains  the newest Z-Wave hardware. This ensures you that the product is stable, with enhanced battery life, increased range and optimal compability with other Z-Wave Plus certified products.


SmartStart is a new, efficient and fast way of adding devices  to your Z-Wave network. You simply install the device and power it up. The gateway automatically recognizes and adds  the device, or you may choose to do it by scanning the  QR code printed on the unit itself. Adding devices has  never been easier or faster.

S2 security
S2 security is a security standard for Z-Wave which uses advanced encrypatation to safeguard your Z-Wave network from hacking or «man-in-the-middle» attacks. You may use Z-Wave doorlocks, garage door openers and similar devices without jeopardizing
your security.

Power metering
Devices marked with Power Metering has the option of measuring power consumption on the connected load.



Mesh network
Z-Wave units contribute to creating a mesh network. A mesh network lets devices receive and send signals to surrounding units to enhance signal range and increase network stability.

Z-wave unit range
Z-Wave unit range may vary according to surrounding building mass. All Z-Wave Plus units have been tested for a range of up to 40 meters of unobstructed space.



Lighting management may be challenging, and we recommend checking the compatibility of different units before installation. We are happy to answer any questions.

Compability between z-wave units
With a great variety of Z-Wave units, not all will work smoothly with all gateways on the market. We are happy to share our experiences regarding the interoperability of our products. Upgrading to beta versions is not recommended.


Ambient temperature
The temperature interval that the unit may be placed in for extended periods of time.

Temperature range
This is the minimum and maximum temperature that the thermostat can use as a setpoint.


Here you'll find some of the most frequently asked questions that we receive about our HeatIt products.

If you have other questions - please feel free to contact us and and we will get in touch with you as soon as possible.

Press the + symbol to open the answers to the questions.

At some point we will include the FAQ-section under each product, making it easier and faster for you to find the necessary information.

What's the difference between Heatit Z-TRM2fx and Heatit Z-Wave Thermostat?

Heatit Z-Wave

Heatit Z-TRM2fx

  As a standalone thermostat
Controls electrical floor heating



Max relay output (resistive)

3600W@230V  (16A)

2900W@230V  (13A)
Max relay output (self-regulating)

750W@230V  (3.2A)

750W@230V  (3.2A)
LED indicator for relay status


Floor sensor


External room sensor


Internal room sensor


Sensor values for floor and external sensor

NTC 10, 12, 15, 22, 33 og 47 kO @ 25°C



Lock mode/child lock


Power regulator


Temperature limiter


Display ON/OFF



Included in Z-Wave network

S0 security


S2 security   x
Weekly program via gateway



Power Metering   x
Over The Air Update (OTA)   x
Shows Relay status   x
Shows measured temperature   x
Controls water-based floor heating (works    
with Heatit Z-Water)   x
Single Channel Associations

Up to 8 devices pr. group

Up to 5 devices pr. group
Multi Channel Associations   Up to 5 devices pr. group
Z-Wave Plus



I know that there is an option to attach two external temperature sensors, but is there also an on-board integrated temp-sensor available?

Yes, there is.

Do I need an external sensor, or does the thermostat also work without one?

The thermostat will work without an external sensor - but it will use the readings from the on-board sensor to determine the temperature of the equipment it controls. If you are interested in reading the exact measured temperature, an external sensor will be more accurate. The internal sensor will be sufficient for 95% of the users.

Is there any LED or display icon signalling that the Thermostat is currently heating - a kind of on/off or heating indicator on the display?

Yes, there is a small Bi-LED with a red light when the thermostat is pulling load. This diode can be found in the right hand corner, directly below the numbers on the display. Once the load on the thermostat is activated, you will hear a clicking sound when the relay kicks in. At the same time, the LED will light up.

Is it possible to change the set-temperature via Z-Wave, to overwrite the manually entered one?

Yes it is. Bi-directional control is enabled. (Use any supported gateway for this).

If I manually change the set-temperature by using the buttons on the Thermostat, how long will this change be valid / in use?

The manually set value will be active until you make a new set-point. If you use a gateway, it will be in use until the next scheduled temperature setting is activated.

Is the Heatit Z-Wave thermostat available in the US or in Canada?

The Heatit thermostat is not for sale on the US and Canadian market. Due to local regulations, the product will not be made available for this market.

Does the HeatIt thermostat fit in a standard Gira-frame?

Yes. It fits the system 55 that is used by Gira and other premium manufacterers.

Is there any information or manuals available in German?

No. There are no information in German as of now.