Siemens ADB-11 S/F 25/08 each speaker circuit is driven

each speaker circuit is driven by the same audio signal

then pulling down on the handle causes it to latch in the down/activated position

— GSA-RB4 4-inch Detector Mounting Base /w Relay c/w GSA-TS Trim Skirt

The addressable ceiling-mount motion detector (AMB-500) achieves superior detection through a special fresnel lens made for 360° detection and a quad element PIR sensor optimized for uniform detection all around its field of view

Name: Kidde GSA-CR Control Relay Module

Siemens ADB-11 S/F 25/08 each speaker circuit is drivenModels ADB 11 and ADBX 11 are audible base detectors that contain a pre wired, audible and piezoelectric device that produces an 85db signal for localized annunciation. Model ADB 11 is designed to be used with conventional Series 11 plug in detectors, and Model ADBX 11 is designed for use with addressable, analog Model FP 11 and Model FPT 11 detectors. Typical application includes all areas that normally would require localized, audible annunciation,