Wireless thermostat for heating or cooling units Green backlit display Optional cooling and heating modes Temperature display in Celsius or Fahrenheit Target temperature display in Celsius or Fahrenheit Toggle between Celsius and Fahrenheit Set the target temperature at any time Automatically turn on or off heating or cooling equipment to help save on energy costs On/Off function Remote shutdown Auto setup code Low battery warning Low temperature and high temperature alarm Memory settings Product parameters OTS100 (Thermostat): Transmit frequency: 433.92 MHz Current temperature range: 0C to 70C (32F to 158F) Target temperature range: 0C to 70C (32F to 158F) Temperature resolution: 1C or 1F Adjustment increment: 1C or 1F per button press Power: 2 x 1.5V AAA batteries (not included) Wall mountable and includes table stand Backlight: Green OPS100 (Plug-in socket): Voltage: 230V/50Hz or 120V/60Hz Maximum power: 3680W, 16A Maximum range: Up to 20 meters in open space