Function Ultra-flat design (9,5 mm) Wireless transmission of outdoor temperature and humidity via up to 3 transmitters Indication of indoor temperature and humidity Absolute and relative atmospheric pressure with history for the last 24 hours, bar graph indication of atmospheric pressure Temperature or humidity for the last 24 hours Comfort level Trend indicators Max.-min.-function Temperature alarm Weather forecast Radio-controlled clock with date and day of week (7 languages) different alarm times (workday, weekend, earlier alarm for frost alert) Moon phase Registered TFA design Product information for download: Technical data Delivery contents Base station, thermo-hygro transmitter, batteries, instruction manual Measuring range temperature outdoor -20…+60°C (-4…+140°F) Measuring range humidity 20…95% Radio-controlled clock defeatable Yes Maximum range 40 m Maximum amount of transmitters 3 Sender im Lieferumfang 30.3213 Transmission frequency 433 MHz Measuring range temperature indoor -5...+50°C (+23...+122°F) Clock Radio-controlled clock Material Plastic Assembling Wall mounting or free-standing Power consumption Batteries Batteries 2 x CR2032 (base station), 2 x AAA 1.5 V (T/H-transmitter) Batteries included Yes Dimensions (L) 178 x (B) 10 (45) x (H) 121 (127) mm Weight 195 g