electric blot?locks and multi-wire electric drop bolt?locks on the market. When the two core wires are energized, the current directly drive the coil to generate the electromagnetic effect. The electromagnetic force attracts the spring piece to control the iron core switch. It is easy to use heat, and the fluctuation of the current is easy to cause electric lock failure. The multi-wire electric drop bolt?locks generally have?microchip control, which not only has the functions of lock state and door state detection?sensor, but also the operation of an electric lock is controlled by a single chip, performance, and reliability, it is recommended.