Item Type: Temperature Humidity Sensor Material: ABS Battery: 2 x AAA Battery (Battery Not Included) Wireless System: Zigbee Transmission Frequency: 2.4GHz Working Temperature: -10℃-+55℃ Working Humidity: 0%-99.99%RH Weight: Approx. 60g / 2.1oz Connection Method: Press the on-off for 5-10 seconds. When the signal icon flashes quickly, release button to set up network. It will last 20 seconds for network settings, and the signal icon will continue to flash. If it is pressed for more than 10 seconds, the network settings will be cancelled. 1、Temperature and humidity sensor supports wireless transmission of data signals and remote monitoring by mobile phones. 2、Radio transmission circuit and coding technology solve the problem of signal interference blocking. 3、Supports multiple temperature modes that can be adjusted, suitable for different scenarios. 4、It has a low?voltage monitoring and prompt function, and regularly sends online reports to the host. 5、The anti?dismantling design in the professional security field is suitable for intelligent homes. 6、Split design, high measurement accuracy, sensitive response and high reliability. 1 x Temperature Humidity Sensor (Battery Not Included) 1 x Manual 1 x Double Sided Adhesive 1 x Bracket