by Administrator, September 29 2018
Preapre a new CR2450 battery. Hold the upper cover of the sensor and the battery cover with both hands, and turn the battery cover counterclockwise to open. Remove the existing battery by hand. Place the new button cell battery in the battery slot and pay attention that the positive side of the battery should face upwards. Align the markers of the battery cover with the markers of on the Motion Sensor (close up), turn the battery cover clockwise to tighten it. The battery cover is successfully attached.