Non-programmable, digital thermostat, LineVoltPRO™ provides electronic control of 208/240-volt (AC) resistive-rated electric baseboard heaters, radiant ceiling heat, convectors and fan forced heaters. If used as directed, can save up to 10% on annual heating costs. Electronic temperature control with precision of ±1F. Large, clear, backlit display is easy to read in various lighting conditions. Quiet operation, reduced clicking noise commonly heard with conventional thermostats. On/Off switch allows thermostat to be turned off at end of heating season. Heating indicator confirms at a glance that heat is on. Maintenance free; no batteries required. Dimensions: 4-7/8 inch high x 2-3/4 inch wide x 7/8 inch deep (124mm high x 70mm wide x 23mm deep). Mounting: vertical. Electrical ratings: 15 Amps Max; 3600 Watts at 240-volt (AC), 3120 Watts at 208-volt (AC). Frequency: 50 Hz; 60 Hz. Stages: 1 heat. Operating temperature range: 32F to 122F (0C to 50C). Premier White®. Switching action: Double Pole/Single Throw (DPST). Switch type: relay. Setting temperature range: 40F to 86F (5C to 30C).