Dual Reader Expansion Module Description:

Firstly, The Dual Reader Expansion Module is designed to add two extra readers to an Alarm.com door controller. While Each Module adds two reader ports, six relay outputs, and eight programmable inputs to the system. In addition,  connect the expansion module to the controller using a shielded, RS-485 twisted pair. Furthermore, for larger commercial installations, Single, as well as Dual Reader Expansion Modules, can also be daisy-chained together.

A dual reader expansion module is a device used to expand the capacity of an access control system by adding support for two additional card readers. It is designed to work in conjunction with the main control panel of the access control system, allowing for the integration of more readers and access points.