Wireless programmer Termojet WT102WIF

Termojet WT-102 — a surface-mounted wireless programmable thermostat for heating systems with boiler control. The thermostat sends commands to the Wi-Fi receiver R06 via radio channel at 868 MHz over a range of up to 120 m in open space. The R06 receiver, in turn, switches the boiler on and off via a relay and connects to the home Wi-Fi network — after which heating can be controlled from anywhere in the world through the Smart Life app. The thermostat is powered by two AAA batteries; no cable routing from the thermostat to the boiler installation point is required.

Technical Specifications

How It Works

The WT-102 thermostat continuously measures the room air temperature and compares it to the set value. When the temperature drops below the set threshold, the thermostat sends a wireless signal to the Wi-Fi receiver R06 (required). The R06 receiver closes the relay — the boiler switches on. Once the set temperature is reached, the signal is released and the boiler switches off. At the same time, R06 transmits the system status via Wi-Fi to the Smart Life app: you can see the current and set temperatures, and change the mode or schedule remotely.

Important: R06 is a mandatory part of the system. The WT-102 thermostat is supplied without a receiver; purchase the Wi-Fi receiver R06 separately or make sure it is already included in your kit.

Applications

• Boiler control in a private house. WT-102 is compatible with any boiler controlled via a dry contact (potential-free input): gas, solid fuel, or electric. The thermostat is placed in a convenient spot in the room; the R06 receiver is installed next to the boiler.
• Renovation without cable routing. If a wired thermostat cannot be installed or the renovation is already complete — WT-102 solves the problem without wall chasing: the thermostat is mounted on the wall or placed on a shelf; no cable from thermostat to boiler is needed.
• Remote heating control. Via the Smart Life app you can turn the boiler on before returning home, lower the temperature while away, or check the heating status at a country house.
• Weekly scheduling. 7 days with 4 time slots per day — set the schedule once, and the system will maintain a comfortable temperature during the day and an economy mode at night or during absence.

Advantages of Termojet WT-102

• Wireless installation — no cables from the thermostat to the boiler room, no wall chasing.
• Wi-Fi control via Smart Life — remote access and schedule changes from your phone.
• 120 m range — reliable communication in a large house or between floors.
• Frost protection — when Frost Protection mode is enabled, the boiler switches on automatically when the temperature drops below a safe threshold.
• Open window detection (OWD) — if the temperature drops sharply by 2°C within 15 min, the thermostat temporarily stops heating and resumes automatically after 30 min.
• Child lock — protects settings from accidental changes.
• EEPROM — all settings are retained even when the batteries are replaced.

WT-102 and Heat Pump

A heat pump, like a gas boiler, is controlled via a dry contact — exactly the signal that the R06 receiver outputs when paired with WT-102. The thermostat maintains a comfortable temperature in the selected room, and the heat pump switches on only when it is truly needed — saving electricity and extending equipment service life. For more information about heat pump solutions, visit the Termojet heat pump website.

Frequently Asked Questions

Can WT-102 be connected without the R06 receiver?
No. WT-102 is a purely wireless thermostat without its own relay: it transmits a radio signal but does not connect directly to the boiler. The Wi-Fi receiver R06 is required for boiler control — it is installed next to the boiler, receives the radio signal from WT-102, and switches the boiler on via a relay. It is also R06 that provides the Wi-Fi connection to the Smart Life app.

How far can the thermostat be from the boiler?
The radio communication range between WT-102 and the R06 receiver is up to 120 m in open space. In real conditions through walls and floors the range is shorter, but for most private houses 2–3 floors are covered without issue. If greater flexibility or zone control for multiple rooms is needed, see the Termojet Zone Control catalogue.