Product application: Using wireless transmitters to pair with wireless receivers, it can realize the access control functions for password access. Divided into two kinds of wireless control and hold-type wireless control, they are convenient for supporting the use of various gating functions. No need to wiring, it can be directly paste (or screw fixed) on a variety of wall surfaces (such as: glass, marble, etc.). It is very convenient for on-site installation, and it can easy realize access control by password entry. It can be used to control automatic doors, floor springs electric lock door and various of rolling gates.