Apollo XPA-CB-14020-APO XPander Optical Smoke Detector with Sounder VID Base (Red Flash) SK-RELAY Simplex 742-342 System Power Supply

Simplex 742-342 System Power Supply (566-071) is the replacement power supply board for the Simplex 4100U and Simplex 4100ES fire alarm panels

Ordering Information 1100-0452: Paging Microphone Module

System Sensor D4120W Watertight 4-Wire Photoelectric Duct Smoke Detector

STI-9602 Steel Web Stopper

The reinforced diaphragm resists pressure spikes and features a sensitivity adjustment wheel for adjustable actuation pressures between 4 and 20 PSI

Apollo XPA-CB-14020-APO XPander Optical Smoke Detector with Sounder VID Base (Red Flash) SK-RELAY Simplex 742-342 System Power SupplyApollo XPA CB 14020 APO XPander Optical Smoke Detector with Sounder VID Base (Red Flash)