HID Mercury MR52-S3B User Manual

1.1 MR52 reader interface
The MR52 reader interface boards provide a solution to the OEM system integrator for interfacing to TTL (D1/D0,
Clock/Data), F/2F, 2-wire RS-485 device and door hardware. The MR52 provides a tristate LED control, and buzzer
control.
Six Form-C relay outputs are provided that can be used for strike control or alarm signaling.
Eight inputs are provided that can be used for monitoring the door contact, request to exit push button, and alarm
contacts. Input circuits can be configured as unsupervised or supervised.
The MR52 communicates to the controller via a 2-wire RS-485.
1.1.1 Component location
Some components shown are not present on the MR52.
PLT-06451, A.1 4 September 2023
Powering
Trusted Identities
HID®Mercury™ MR52-S3B Reader Interface
Installation and Specifications

HID Mercury MR52-S3B Specifications

General

Brand	HID
Model	Mercury MR52-S3B
Category	IP Access Controllers
Language	English