FRO-48A-STAT Snow Melting Thermostat


An intelligent all-in-one solution for ice and snow melting for use in all applications within electrical heating. Optimal operation is ensured due to output control which makes the system both effective and economical. ETO2 offers you the possibility of snow melting – the green way.

Thermostat functions for minimal energy use

Using readings from temperature and moisture sensors, the controller ensures economical control of power consumption when keeping outdoor areas free of ice and snow. The moisture sensor is installed in the surface of the outdoor area. As soon as moisture is detected, the ETO2 controller activates the snow melting system. Once the sensor has dried out, the thermostat immediately goes in afterrun and the system will continue to provide heat for a predetermined amount of time.

Instructions User Manual


For Outdoor areas – HDST-OJ-ETO2 and HDST-XX-ETOG is used:
The sensor type HDST-XX-ETOG is designed for embedding into the surface of the outdoor area. ETOG detects ground temperature
and moisture. The air sensor type HDST-OJ-ETF7 can be used for measuring rapidly temperature decreases.

Remote control:
It is possible to control the ETO2 from an external signal (day/week timer, GSM-module or other signal source) The ETO2 can be switched on/off (standby) and the heating system can be forced on, in the after run time that has been set in the menu.

  • Electronic on/off control up to 11 KW
  • 2 zone control, individually controlled at the same time
  • Economical control – minimising energy consumption
  • Control of electrical ice and snow melting systems
  • Detection of temperature and moisture
  • Display and “knob wheel” for easy programming
  • Adjustable moisture sensitivity
  • 3 years warranty

Related Products

External air temperature sensor

FRO-TEM-SENS External ASir `Temperature Sensor

The HDST-OJ-ETF7 sensor is suitable for measuring outdoor temperature, and is normally used in combination with HDST-XX-ETOG ground sensors for outdoor areas. The ETF7 sensor can detect rapid drops in air temperature, thus avoiding icy areas.

External moisture and temperature ground sensor

FRO-GRO-SENS External moisture and temperature ground sensor

The ground sensor, type HDST-25-ETOG with 25 metre cable and HDST-10-ETOG with 10 metre cable, is designed for embedding into the surface of the outdoor area. The sensor detects both temperature and moisture.

The sensor can be mounted where snow and ice problems normally occur.