# MP1501 — Single Door Panel

## Overview

The Mercury MP1501 is a single-door access control panel. It supports 1 door with 2 readers (in/out), 8 supervised inputs, and 4 relay outputs. Connects to a host controller (EP1502, EP2500, etc.) via RS-485.

<table id="bkmrk-specvaluedoors1reade"><thead><tr><th>Spec</th><th>Value</th></tr></thead><tbody><tr><td>Doors</td><td>1</td></tr><tr><td>Readers</td><td>2 (Wiegand or OSDP)</td></tr><tr><td>Inputs</td><td>8 supervised</td></tr><tr><td>Outputs</td><td>4 relay</td></tr><tr><td>Communication</td><td>RS-485 to host controller</td></tr><tr><td>Power Input</td><td>12–24VDC</td></tr></tbody></table>

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## DIP Switches

The MP1501 has an 8-position DIP switch bank used to set the RS-485 board address. The address determines which port on the host controller this panel communicates on.

<table id="bkmrk-addresssw1sw2sw3sw4s"><thead><tr><th>Address</th><th>SW1</th><th>SW2</th><th>SW3</th><th>SW4</th><th>SW5–8</th></tr></thead><tbody><tr><td>0</td><td>OFF</td><td>OFF</td><td>OFF</td><td>OFF</td><td>OFF</td></tr><tr><td>1</td><td>ON</td><td>OFF</td><td>OFF</td><td>OFF</td><td>OFF</td></tr><tr><td>2</td><td>OFF</td><td>ON</td><td>OFF</td><td>OFF</td><td>OFF</td></tr><tr><td>3</td><td>ON</td><td>ON</td><td>OFF</td><td>OFF</td><td>OFF</td></tr><tr><td>4</td><td>OFF</td><td>OFF</td><td>ON</td><td>OFF</td><td>OFF</td></tr><tr><td>5</td><td>ON</td><td>OFF</td><td>ON</td><td>OFF</td><td>OFF</td></tr><tr><td>6</td><td>OFF</td><td>ON</td><td>ON</td><td>OFF</td><td>OFF</td></tr><tr><td>7</td><td>ON</td><td>ON</td><td>ON</td><td>OFF</td><td>OFF</td></tr></tbody></table>

**SW5–SW8:** Reserved — leave OFF. **Address 0** is typically not used in production (reserved for default/unconfigured).

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## Wiring Notes

- **RS-485 Bus:** Connect A(+) and B(−) to the RS-485 port on the host controller. Daisy-chain up to 32 devices per RS-485 segment. Terminate the last device with a 120Ω resistor.
- **Readers:** Reader 1 = Door IN, Reader 2 = Door OUT. Wiegand: D0/D1/+5V/GND. OSDP: A/B/+12V/GND.
- **Door strike:** Connect to Relay 1 (NC/COM/NO). Use NC for fail-safe (unlocks on power loss) or NO for fail-secure.
- **Door contact:** Connect to Input 1 (supervised — use EOL resistors per system requirements).
- **Rex (Request to Exit):** Connect to Input 2.

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## Resources

- [MP1501 Installation Guide (HID/Mercury)](https://www.hidglobal.com/sites/default/files/resource_files/plt-03020_a.2_-_mp1501_installation_guide.pdf)
- [Mercury Installation Assistant Utility (IAU)](https://downloadcenter.genetec.com/support/Firmware/Mercury/Mercury_IAU_FWTool_ver1043.zip)