Function Wireless transmission of outdoor temperature via transmitter (max. 80 m) - Indication of indoor temperature and humidity Permanent indication of max. and min. values with manual reset Additional max.-min. memory with auto reset after 24 hours Swiss precision sensor: humidity ± 3% (35 … 75%)[*] [*] TFA Quality mark: Swiss Precision Sensor Product information for download: Technical data Delivery contents Base station, temperature transmitter, instruction manual Measuring range temperature outdoor -40...+60°C (-40...+140 °F) Maximum range 80 m Sender im Lieferumfang 30.3234.10 Transmission frequency 433 MHz Measuring range temperature indoor -10...+60°C (+14... +140°F) Measuring range humidity indoor 10%...99% Material Plastic Assembling Wall mounting or free-standing Power consumption Batteries Batteries 1 x AA 1.5 V (base station), 1 x AA 1.5 V (transmitter) Batteries included No Dimensions (L) 77 x (B) 22 x (H) 86 mm