Big LCD weather station, weather forecast base on barometer, in/out temperatuer/humidity, windspeed/windchill, rain, pressure. Features:1) ... :1) Receiver2) Three outdoor sensors: thermo-hydro transmitter, wind sensor and rain sensor Specifications:1) Outdoor temperature range: -40.0°C to ... :a) Receiver: 3 x AA alkaline batteries (not included)b) Sensor WH1: 2 x AA alkaline batteries (not included)