Features 1、When the temperature and humidity exceed the set upper and lower limits, the receiver will send a corresponding color alarm. 2、The temperature and humidity trend icon provides an intuitive interpretation of the rapid changes in temperature and humidity. 3、The shell is made of high‑quality ABS material, which is waterproof, wear‑resistant, durable and has a long service life. 4、Outdoor thermometer with large LCD display provides enhanced visibility and at a glance readings, convenient to use. 5、This wireless digital thermometer suitable for monitoring both indoor and outdoor temperatures in two metrics, °F or °C. Specification Condition: 100% Brand New Item Type: Wireless Thermometer Material: ABS Host Size: Approx. 124 x 125 x 24mm/4.9 x 4.9 x 0.9in Transmitter Size: Approx. 104 x 35 x 17mm/4.1 x 1.4 x 0.7in Transmission Distance: The open distance is 100 meters / 328ft; the effective distance is 30 meters / 98ft. Frequency: 433 MHZ Power Supply: Wireless Thermometer Host: 3 x 1.5 AAA Battery (Battery Not Included) Wireless Transmitter: 2 x 1.5V AAA Battery(Battery Not Included) Indoor Temperature Measurement Range: 0-50℃ 1: Accuracy ±1 at 0℃-40℃, Resolution 0.1 2: Accuracy ±1.5 at 40℃-50℃, 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 Package List 1 x Thermometer Host (Battery Not Included) 3 x Wireless Transmitter (Battery Not Included) 1 x USB Charging Cable 1 x Instruction