Function With dual channel transmitter for wireless transmission of outdoor temperature and optional sensor cable One additional channel available Indication of indoor temperature and indoor humidity Comfort level Max.-min.-function Radio-controlled clock Date Time zone ±12 hrs Registered TFA design TFA Quality mark: Swiss Precision SensorIT Instant Transmission Product information for download: Technical data Delivery contents Base station, temperature transmitter, instruction manual Measuring range temperature outdoor -40...+60°C (-40...+140°F) Radio-controlled clock defeatable Yes Maximum range 100 m Maximum amount of transmitters 3 Sender im Lieferumfang 30.3143.IT Transmission frequency 868 MHz Measuring range temperature indoor -10...+60°C (+14...+140°F) Measuring range humidity indoor 1...99% Clock Radio-controlled clock Material Plastic Assembling Wall mounting or free-standing Power consumption Batteries Batteries 2 x AA 1.5 V (base station), 2 x AAA 1.5 V (transmitter) Dimensions (L) 81 x (B) 33 (71) x (H) 143 mm Weight 165 g