Alarm.com | The X100 Two Reader Expansion Module is designed to add two extra readers to an Alarm.com Aero Series X1100 Door Controller. Each ADC-AC-X100 adds two reader ports, four relay outputs, and four programmable inputs to... | ADC-AC-X100-B

The X100 Two Reader Expansion Module is designed to add two extra readers to an Alarm.com Aero Series X1100 Door Controller. Each ADC-AC-X100 adds two reader ports, four relay outputs, and four programmable inputs to the system. Connect the expansion module to the controller using a shielded, RS-485 twisted pair.