INSTALLATION AND MAINTENANCE INSTRUCTIONS Interface Module Installing information is included as a quick reference installation This manual should be left with the owner/user of Description M502M Interface Module is intended for use in intelligent, Requirements All wiring must conform to applicable local codes, ordi- Install module wiring in accordance with the job drawings Set Secure module to electrical box (supplied by installer), as 1. Controls and indicators: 2A. Module mount- with barrier: 2B: Two-wire System Sensor Smoke Detectors for Use with M502M with Zone Identifier A: 3. Interface two-wire conventional detectors, NFPA Style B: BRANCH CIRCUIT NEXT INTERFACE MODULE. SUPERVISES SUPPLY AND DETECTOR LOOP. NEXT TO THE INTERFACE MODULE BE EXTERNALLY SWITCED TO THE DETECTORS. AN M500R RELAY MODULE CAN BE USED TO POWER FROM A STANDARD SUPPLY – SEE FIGURE 5.