This is a remote control for access control system. After connection remote can press to trigger the device to perform different working modes Input voltage: 12V Receiver sensitivity : >96dbm Transmitting distance : >100m (open space) Working modes: Momentary toggle, latching time delay(5s, 10s, 15s) Output terminal: NO, NC, COM Working mode: 1. Inching mode: press the remote control, relay will connect and release the remote control and the relay disconnect 2. Self Locking mode: press the remote control and relay will press and press the remote control again and relay will release 3. Interlocking mode: Press the remote control key A or On to connect the relay and press the remote control key B or Off to disconnect relay 4. Delay mode