Brand: Mercury Security · SKU: MR52-S3 · MPN: MR52-S3 · Category: Components

The Mercury Security MR52-S3 is a dual-reader interface module designed for access control systems, supporting two reader interfaces along with door monitoring and control functions.
| Inputs | 8 General Purpose, 2 Dedicated (Tamper and Power Monitor) |
|---|---|
| Relays | 6 Form-C (5A @ 30VDC) |
| Features | Dual-Reader Support, Door Interface, Access Control Integration |
| Encryption | AES 128/256 bit data encryption |
| Connectivity | Reader and Door Interface Connections |
| Installation | Professional Access Control Systems |
| Reader Ports | 2 |
| Communication | RS-485, 2-wire, 4,000 ft |
| Primary Power | 12-24 VDC +/- 10%, 550mA maximum |
| Reader Technology | OSDP, OSDP Secure Channel, Wiegand, Clock/Data, F/2F |
| Operating Temperature | 0 to 70 °C |
| Warranty | 3-Year Warranty |
| Weight | 0.70 lbs |
| Dimensions | 6.0" W x 8.0" L x 1.0" H |
The Mercury Security MR52-S3 Dual Reader Interface Module is an access control hardware device designed to connect and manage two card or credential readers within a compatible security management system. It provides the interface between readers, door hardware, and an access control host or controller. The MR52-S3 is designed for applications where multiple doors or entry points need to be monitored and controlled from a centralized access control platform. By supporting two reader interfaces , the module can be used in installations such as office buildings, commercial facilities, educational institutions, healthcare environments, and other locations requiring controlled access. The module provides connections for reader devices and supports common access control inputs and outputs. Depending on the system configuration, these connections can be used for door position monitoring, request-to-exit devices, lock control, and other access-related functions. The MR52-S3 can be integrated into larger access control systems through a compatible Mercury controller or host architecture. This allows security administrators to manage credentials and access permissions through centralized
Yes, this Mercury Security MR52-S3 Dual Reader Interface Module (MR52-S3) is 100% genuine Mercury Security hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This Mercury Security MR52-S3 Dual Reader Interface Module includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the MR52-S3.