Features 1、Outdoor sensor with LCD display can measure at every position, meet your needs. 2、When the temperature and humidity exceed the set upper and lower limits, the receiver will send a corresponding color alarm. 3、The 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. 5、Made of high‑quality ABS material, durable in use and has a long service life. Specification 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 Package List 1 x Weather Station Main Machine (Batteries Not Included) 3 x Wireless Transmitter (Batteries Not Included) 1 x USB Charging Cable 1 x Instructions