• RJ45, for LAN/PoE
• Bi-stable latching relay #1, max. 24 V DC / AC,1 Ampere, e.g. for electric door opener
• Bi-stable latching relay #2, max. 24 V DC / AC,1 Ampere, e.g. for electric door opener
• External input for external door opener button
• 15 V DC input (+, -), max. 15 W
• Relays can be expanded / detached withDoorBird I/O Door Controller