Description:   Communication method: zigbee     Dimensions: ø61.2X23mm     Working temperature: -10 ~ 50 ℃     Power supply: DC3V (AAA * 2 battery)     Function: Determine whether the infrared light emitted by the human body is moving to sense the existence of the human body in the defense zone   Specifications:   1. Radio transmitting circuit and coding technology to solve the problem of signal interference blocking    2.Various temperature modes can be adjusted, suitable for different scenarios    3. Wireless transmission of data signals, mobile phone remote monitoring    4. Ultra-low power consumption and long battery life    5.With low voltage monitoring prompt function    6. Send online reports to the host regularly    7. Anti-disassembly design in professional security field    8. Split design, high reliability   Package Included:   Sensor * 1    Manual * 1   Notes:   Only supports 2, 4G wireless network, and does not support 5G network temporarily.    Need to be used with a gateway that supports zigbee protocol.