Description This indoor/outdoor thermometer makes your daily life much more convenient. Just put the receiver on the desk and you can easily know the outdoor temperature. Features: It can display indoor and outdoor temperature. Wireless transmission function, you can know the outdoor temperature with the indoor receiver. Indoor temperature range: 0~60°C; Outdoor Temperature Range: -40 ~ 60 ° C. Very convenient, great item for home or office use. Specifications: Indoor Temperature Measurement: 0 ~ 60 ° C Outdoor Temperature Measurement: -40 ~ 60 ° C Accuracy: (+/-1 ° C Wireless Transmission (Outdoor)): 100 meters, 30 meters in most conditions Frequency: 433 MHz Update Rate: 60 seconds Transmitter Battery: 2 x 1.5V AAA Batteries (Not Included) Receiver Battery: 2 x 1.5V AAA Batteries (Not Included) Transmitter Size: 6.6 * 5 * 2 cm / 2.6 * 1.9 * 0.79in 1.97 * 0.8in Receiver Size: 8 * 5.5 * 1.7cm / 3.15 * 2.16 * 0.67in Transmitter Weight: 28g / 1.01oz Receiver Weight: 38g / 1.37oz Package