Usage Tips:Features: Humidity: Indoor & Outdoor measurable range: 20%RH ~ 95%RH Temperature: Indoor temperature measurement ranges: -9.9C (14.2F) ~ 50C (122F); Outdoor temperature measurement ranges: -20C (-4F) ~ 60C (140F); Temperature alternatively in C or F Weather forecasting and air pressure detect, Time in optional 12/24-hour format, Daily Alarm Function, Snooze function, Low battery indicates, Indoor comfort indictor. The temperature, humidity, and comfort of the 3 remote sensors displayed on the screen, Ice alert, Maximum /minimum value record of temperature and humidity. 7 languages select : English, German, French, Spanish, Italian, Dutch, Danish Wireless Outdoor Sensor: Wall Mount or Table Stand 3 Channel 433.92MHz RF transmitting frequency 50 Meter transmission range in an open area Power Supply Weather Station: Battery: 2 AAA batteries required (Not included in the package) DC 5V USB power supply, universal only USB power cable in the package, no adapter included. Remote Sensor: Battery: 2 AAA batteries required (Not included in the package) Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: plastic colour: As shown Package Contents: 1 x Weather Stations 3 x Sensor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.