Honeywell PRO42R2B Professional PRO4200 Series Dual Reader Board, Output Relay, 12/24VDC (Replaces PRO42R2)

Dual reader access control module designed for high-density installations. Features serial RS-485 and Wiegand communication protocols for flexible integration with existing security systems. Output relay support enables direct control of door locks and access mechanisms. Operates on 12/24VDC power supply, making it compatible with standard security infrastructure. Ideal for multi-door access control deployments requiring reliable, scalable reader management.