Description\n\nProvides support for an additional 5 doors to the controller system, expanding it into a 10-door controller.\n\n* features\n\n| | | |\n| --- | --- | --- |\n| No | Item | Features |\n| 1. | Max Door | 5 |\n| 2. | Relay Output | 8 (5 for Door Relay + 3 General Purpose) Relay Rating : 1A |\n| 3. | Sensor Input | 16 |\n| 4. | On Board Surge Suppressor | Yes |\n| 5. | Power Requirement | 12V @ 5A |\n| 6. | Communication to Base Board | RS485 |\n| 7. | LED Indicator | Yes |