This indoor/outdoor thermometer brings convenience to your daily life. Simply place the receiver on the table, and you can easily see the outdoor temperature. Feature: Can display indoor and outdoor temperature. With the wireless transmission function, you can know the outdoor temperature via the indoor receiver. Indoor temperature range: 0~60°C; Outdoor temperature range: -40~60°C. Very practical for use at home or in the office. Product Specifications: Indoor temperature measurement: 0~60°C Outdoor temperature measurement: -40~60°C Accuracy: (+/-) 1°C Wireless transmission (outdoor): 100 meters, 30 meters under most conditions Frequency: 433 MHz Update frequency Day: 60 seconds Transmitter battery: 2 x 1.5V AAA batteries (not included) Receiver battery: 2 x 1.5V AAA batteries (not included) Transmitter size? ???e: 6.6 x 5 x 2 cm. Receiver size: 8*5.5*1.7 cm Transmitter weight: 28 grams Receiver weight: 38 g Package size: 17*7.7 *3 cm Package weight: 109 g Package list: 1 * Receiver 1 * Transmitter