Mercury™ MR50-S3 Controller


Due to Supply Chain Disruption, Please consider 15-60 days lead time depends on the quantity in your order and our distribution share from the Manufacturer.  Exceptional refund policy: 3% Cancellation Fee applies to all Order or Pre-Order purchases.

The high-performance MR50 Controller is an ideal choice for a compact and economical single-card reader interface panel. It is RS-485 connected and can be clustered or distributed depending on the installation requirements.

The board is easy to install and supports OSDP, Wiegand, clock and data, magnetic stripe, F2F, Supervised F2F, keypad and biometric reader technologies.

Part# MR50-S3

Key Benefits:

  • Easily connects to HID Mercury’s intelligent controllers
  • Provides all I/O needed for single door control
  • Comprises a small footprint for versatility


  • 1 Reader Port (supports up to 2 OSDP readers)
  • Card/Keypad Data: OSDP, Clock/Data, Data–1/Data–0, RS-485 or F/2F
  • Control of 1 Door
  • 3 Inputs: 2 General Purpose, 1 Dedicated Tamper
  • 2 Relays: 1 x NO 5A @ 30VDC or NC 3A @ 30VDC, 1 x 2A @ 30VDC
  • Dimensions: 2.75” L x 4.25” W x 1.0” H, (70mm L x 108mm W x 25.4mm H)
  • Operational Temperature: -40 – 70 deg C

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