Genetec Mercury MR52-S3 Dual-Reader Interface Module

The Genetec Mercury MR52-S3 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. Backed by our 1-year hardware guarantee.