TFA Climate & Home Wireless, Wireless radio hygro-thermometer, Wireless thermo hygrometer for monitoring indoor and outdoor climates, With internal sensors and 3 wireless transmitters (max. 100 m) for monitoring temperature and humidity in up to 4 rooms, Max.-/ Min. function, Comfort zone, Radio-controlled clock with date, Individual labelling of transmitter locations, Can be connected to a WeatherHub gateway, T in: -10... + 60°C (+14... +140°F), T out: - 40... + 60°C (-40... +140° F), H in/out: 1... 99%, Incl. 3x transmitters T/H 30.3180.IT, each operates with: 2x 1.5V AA (not included)@+*Base station:*@+@+, Dimensions: 128 x 32 (58) x 128 mm, Weight: 217 g, Operates with 3 x 1.5 V AA batteries (not included)