Features:  1. Adopt 16-bit low-power microprocessor.  2. With low voltage monitoring and prompt function.  3. Ultra-low power consumption, long battery life.  4. Digital temperature compensation technology.  5. Has anti-white light function.  6. Regularly send online reports to the host.  7. Applicable to multiple scenarios.    Specification:  Communication method: ZB;  Dimensions: 48 x 53.2 mm;  Working temperature: -10~50℃;  Power supply: 3V (CR123A battery) (not included);  Alarm current: ≤25 mA;  Detection angle: 90°;  Quiescent current: ≤15 uA;  Detection distance: 8 m;  Transmitting frequency: 2.4 GHz;  Installation method: Ceiling-mounted;  Launch distance: 8 m;  Communication method: wireless;  Weight: 75 g;  Alarm method: APP push;    Function: Determine whether the infrared light emitted by the human body is moving, to perceive the existence of the human body.    Package included:  1 x Sensor