The door magnetic alarm is a wireless sensor device widely used in the security field. It is mainly used to monitor the opening and closing status of doors, windows, drawers, etc., and trigger an alarm when they are opened abnormally. Its compact design and low power consumption make it highly dependent on button batteries for power supply.

These cameras are IP-based video surveillance solutions that enable live video streaming and recording capabilities when the device is connected through a smartphone app or other devices. These cameras also offer remote viewing facilities and different smart features such as smart home ecosystem integration, motion sound detection, two-way audio communication, and time-lapse options. The camera motherboard is equipped with a CR1220 button battery for the motherboard to remember the time.