Digital Wirele Weather Station with 3 Sensors Indoor/Outdoor w/ Black LED LCD Display & Alarm Clock 4 Languages This Weather Station provides multilocation temperature and humidity measurement with maximum 4 points of measurement taking with 3 outdoor sensors and one main unit. It is helpful for you to keep an eye on the condition of different places all at once. Note to buyer: The weather station will be reset when changing new batteries. It will take around 2 mins to reconnect to the sensors Outdoor sensors with LCD display for the measurement in each location Calendar of 2000~2099,month and date display Indoor main unit can be placed on the table with a stand 12H/24H format Output with Black LED on LCD display Temperature display in / (main unit) and (sensor) Manual in 4 languages: English, German, French & Spanish Alarm and snooze Temp. Range: 0~50C, 32~122F (Indoor Main Unit) -40~70C, -40~158F (Outdoor Sensors) Resolution: 1C, 1F Accuracy: 4C (under -40 ~ -20C); 2C (under -20 ~ 0C); 1C (under -0 ~ 50C); 2F (under -40 ~ -4F); 3.6F (under -4 ~ 32F); 1.8F (under 32 ~ 122F) Humidity. Range: 20~95%rH (Indoor Main Unit under 0~50C, 32~120F) 20~95%rH (Outdoor Sensors) Resolution: 1%rH Accuracy: 5% (under 25C, 30~80%rH); 8% (under 25C, 20~29%rH and 80~95%rH) Sampling Rate: Programmable from 1 minute up for Indoor Main Unit and 30 seconds up for Outdoor Sensor LCD Size (HxW): 7cmX7cm Dimension (L * W * H) 12cm*11cm*3cm (Indoor Main Unit) 11cm*4cm*2.3cm (Outdoor Sensor) Weight 0.11kg (Indoor Main Unit) 0.04kg (Outdoor Sensor) Power Supply 2 x AAA 1.5V Batteries (Indoor Main Unit) 2 x AA 1.5V Batteries (Outdoor Sensor) Comes With 1 x Weather Station Main Unit 3 x Wirele Sensor 1 x Metal stand 1 x Instruction Manual in English, Spanish, German, and French Standard Factory Packaging