Wired programmer Termojet HT102WRD

Termojet HT-102 — a compact wired thermostat-programmer for controlling a gas or solid-fuel boiler. The thermostat connects directly to the dry contacts of the boiler relay and maintains the set room temperature according to a programmed weekly schedule. A dedicated RF receiver is included — no additional devices required.

Technical Specifications

How It Works

The built-in thermostat sensor measures the air temperature in the room. If the temperature drops below the set value — the HT-102 closes the dry contact and sends a switch-on signal to the boiler. When the temperature reaches the set level — the contact opens, the boiler switches off. All communication takes place via the dedicated RF receiver included in the package, installed next to the boiler.

The Open Window Detection mode (OWD) automatically stops heating if the room temperature drops rapidly by 2°C within 15 minutes — and resumes operation after 30 minutes. Settings are stored in non-volatile EEPROM memory even when batteries are replaced.

Where It Is Used

• Boiler room or technical room. The HT-102 mounts on the wall anywhere convenient and controls the boiler without running complex wiring through living rooms.
• Country house or cottage. A weekly schedule with 4 temperature levels per day allows the “warm” mode to be set only on weekends.
• Systems without Wi-Fi. Where internet control is not needed or desired — the HT-102 provides reliable autonomous programming without any apps or cloud services.
• Renovation and modernisation. Simple installation without chasing: thermostat on the wall, receiver near the boiler. Replacement of an old mechanical controller without re-routing cables.

Advantages of the HT-102

• Complete out-of-the-box kit — the dedicated RF receiver is already included, nothing extra to purchase.
• Battery-powered autonomous operation — independent of the 230 V mains and power outages.
• Frost protection — even when the boiler is switched off, it maintains a minimum temperature to prevent pipes from freezing.
• Child lock — the panel is locked by pressing buttons simultaneously.
• Accuracy ±0,5°C — stable maintenance of the set comfort level.

Frequently Asked Questions

Does the HT-102 require a separate receiver?
No. A compact RF receiver is included in the delivery package. It is installed near the boiler and connected to the dry contact terminals — there is no wire between the thermostat and the boiler.

What is the difference between the HT-102 and the Wi-Fi thermostat HT-120?
Wi-Fi thermostat HT-120 is suitable for control from a phone via the Smart Life app and integration with voice assistants. The HT-102 is the choice for those who want simple and reliable autonomous programming without dependence on the internet or a smartphone. If remote control is needed — also consider the Wi-Fi receiver R06, compatible with WT-series wireless thermostats. The full range is in the Termojet zone control catalogue.