1Outdoor sensor with LCD display can measure at every position, meet your needs. 2When the temperature and humidity exceed the set upper and lower limits, the receiver will send a corresponding color alarm. 3The temperature and humidity trend icon displays and intuitively interprets the rapid changes in temperature and humidity. 4 / temperature unit can be switched freely by one key, convenient to use. 5Made of high& 8209;quality ABS material, durable in use and has a long service life. Condition: 100% Brand New Item Type:Digital Wireless Weather Station Thermometer Material: ABS Wireless Specifications: Transmission Distance: Open Distance: Approx. 100m / 328.1ft Effective Distance: Approx. 30m / 98.4ft Frequency: 433 MHZ Indoor Temperature Measurement Range: 0-50 1: 0-40: accuracy: 1, resolution: 0.1 2: 40-50: accuracy: 1.5, resolution: 0.1 Outdoor Temperature Measurement Range: -50-70 1: 0-40, -10-0: accuracy: 1, resolution: 0.1 2: 40-50, -30-10: accuracy: 1.5, resolution: 0.1 3: 50-70, -50-30: accuracy: 2, resolution: 0.1 Indoor Humidity Measurement Range: 20%-99% 1: 40%-80%: accuracy: 5, resolution: 1 2: 30%-40%, 80%-90%: accuracy: 8, resolution: 1 3: 20%-30%, 90%-99%: accuracy: 10, resolution: 1 Outdoor Temperature and Humidity Measurement Range: 20%-99% 1: 40%-80%: accuracy: 5, resolution: 1 2: 30%-40%, 80%-90%: accuracy: 8, resolution: 1 3: 20%-30%, 90%-99%: accuracy: 10, resolution: 1 Power Supply: Weather Station Main Machine: 3 x 1.5AAA battery (Not Included) Wireless Transmitter: 2 x 1.5V AAA battery (Not Included) Product Size: Main Machine: Approx. 124 x 125 x 24mm / 4.9 x 4.92 x 0.9in Transmitter: Approx. 104 x 35 x 17mm / 4.1 x 1.4 x 0.7in 1 x Weather Station Main Machine (Batteries Not Included) 3 x Wireless Transmitter (Batteries Not Included)1 x USB Charging Cable1 x Instructions