MP1502 — Dual Door Panel

Overview The Mercury MP1502 is a two-door access control panel. It supports 2 doors with up to 4 readers (2 in/2 out), 16 supervised inputs, and 8 relay outputs. Connects to a host controller via RS-485. Spec Value Doors 2 Readers 4 (Wiegand or OSDP) Inputs 16 supervised Outputs 8 relay Communication RS-485 to host controller Power Input 12–24VDC DIP Switches The MP1502 uses an 8-position DIP switch bank to set the RS-485 board address (binary encoded, SW1=LSB). 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. Wiring Notes RS-485 Bus: A(+) and B(−) to host controller RS-485 port. Daisy-chain up to 32 devices. Terminate last device with 120Ω. Door 1 readers: R1 (IN) and R2 (OUT). Door 2 readers: R3 (IN) and R4 (OUT). Door strikes: Relay 1 = Door 1, Relay 2 = Door 2. Relay 3–8 available for auxiliary outputs. Door contacts: Input 1 = Door 1 position, Input 2 = Door 2 position (use supervised EOL resistors). Rex inputs: Input 3 = Door 1 Rex, Input 4 = Door 2 Rex. Resources MP1502 Installation Guide (HID/Mercury) Mercury Installation Assistant Utility (IAU)