Air Products & Controls Remote Alarm Accessory,5-1/2" Length MSR-50RK/W

Key-Operated Test/Reset, Lever O Finish Painted Enamel Includes Pilot and Trouble, Remote Key Te Standards UL 268 For use with All APC Duct Smoke Detectors Voltage 24V DCYou may also like Air Products & Controls Remote Alarm Accessory MS-KA/P/R.