1. Combined with BF-660C /BF-880/NBDE series reader to control single door.
2. Split system, more security for door access control.
3. Compact size and easy to make installation.
4. One relay output and two inputs for door sensor and exit button.
5. RS-485 communication.
6. Watch dog inside.
7. Power: DC-9 ~ 30v.
1. VIN: power +. 2. GND: power - . 3. Door sensor connector: S1, S2. 4. Exit button connector: B1, B2 . 5. RS-485 connector: 485+, 485- . 6. Relay output: COM : (relay capacity : 1A /125VAC , 1A /30VDC ), NO, NC.