Geovision GV-Push-Button Specsheet

PB21 Push Button Switch

The PB21 is an American standard push button switch, designed with a stainless steel
faceplate. It can be integrated with access control system, allowing door exit by momentarily
activating or deactivating the electric locking device.

Packing List

1. PB21 push button switch x 1

2. Phillips screw x 2

3. Wire clamp x 3

4. Wire protection tube x 3

Contacts

1. To set a normally closed switch, connect the

wires of access control system to the COM
and NC pins of the push button switch.

2. To set a normally opened switch, connect
the wires of access control system to the

COM and NO pins of the push button switch.

Specifications

Push Button Switch

Dry contact, 5A / AC 125V or 3A / AC 250V