1. Material: plastic
2. Function: measure temperature, memorize minimum / maximum temperature value, high temperature alarm, low temperature alarm
3. Dimensions: transmitter 6.6 * 5 * 2 cm, receiver 8 * 5.5 * 1.7 cm
4. Battery: 1.5V AAA battery (not included)
5. Wireless transmission function, can understand outdoor temperature through indoor receiver
6. Wireless range: no interference 100m
We 100% support our customers, our products have 180 days warranty. If you have any problem with our products, please CONTACT US at once.