Apollo 4 Door Controller AAN-4N

Key Features:
- On-Board Memory for up to 20,000 Cardholders/7000 Events With Battery-Less Backup 
- 12 Inputs
- 8 Form-C Relay Outputs with Support for 16 External ADA-10/11 Digital Relay Modules for increased       Security
- Ethernet, RS-485 or RS-232 Communication
- 8 Facility Codes/Card Formats
- 38 Access Levels Per Card
- 3-Color LED Support