Mercury•Access Control Boards

Genetec Mercury MR52-S3B Dual-Reader Interface Module

MPN: SY-MR52-S3B

$369.99

Out of Stock

The Genetec Mercury MR52-S3B is a dual-reader interface module that expands a Genetec Synergis access control system, adding two doors' worth of reader, input, and relay capacity downstream of a Mercury intelligent controller. It connects to the master controller over a 2-wire RS-485 bus, so you extend door capacity across a facility without home-running every reader back to the panel. Each board supports two card readers, eight supervised inputs for door contacts, request-to-exit devices, and alarm points, and six Form-C relay outputs for strike control and signaling. As a Series 3 (S3) board it carries Mercury's updated processor and enhanced onboard security, making it the current-generation choice for new Synergis installs and the drop-in expansion path for existing MR52 deployments. This is the "B" board-only version. Backed by our 1-year hardware guarantee.

• Dual-reader interface module — adds 2 doors of capacity to a Genetec Synergis system
• 2 reader ports, 8 supervised inputs, and 6 Form-C relay outputs
• Connects downstream of a Mercury intelligent controller via 2-wire RS-485
• Series 3 (S3) current generation — updated processor and enhanced security
• Drop-in expansion for existing MR52 deployments
• Board-only version (no enclosure)
• Certified Mercury hardware, native to Genetec Synergis
• Ecosystem-flexible — same MR52-S3 platform used across Genetec, Lenel, and other Mercury OEMs

✓ Free standard shipping  ✓ 1-year hardware guarantee  ✓ Ships same day (by 4:00 PM CT)  ✓ 30-day returns

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