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.
| Spec | Value |
|---|---|
| Doors | 1 |
| Readers | 2 (Wiegand or OSDP) |
| Inputs | 8 supervised |
| Outputs | 4 relay |
| Communication | RS-485 to host controller |
| Power Input | 12–24VDC |
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.
| Address | SW1 | SW2 | SW3 | SW4 | SW5–8 |
|---|---|---|---|---|---|
| 0 | OFF | OFF | OFF | OFF | OFF |
| 1 | ON | OFF | OFF | OFF | OFF |
| 2 | OFF | ON | OFF | OFF | OFF |
| 3 | ON | ON | OFF | OFF | OFF |
| 4 | OFF | OFF | ON | OFF | OFF |
| 5 | ON | OFF | ON | OFF | OFF |
| 6 | OFF | ON | ON | OFF | OFF |
| 7 | ON | ON | ON | OFF | OFF |
SW5–SW8: Reserved — leave OFF. Address 0 is typically not used in production (reserved for default/unconfigured).
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.