Be sure to calibrate your #Trutest once per year or after every 5,000 tests. To schedule your calibration, contact SDi's service department... | By SDi Specialized Fire Products | Facebook
System Sensor OSI-R-SS Reflected Type Beam Smoke Detector, 4-Wire, Single-Ended, 8" Reflector and Integral Sensitivity Test, (Replaces BEAM1224)
Notifier Fire Alarm, Chicago, Aurora, Naperville, Schaumburg, Northbrook, Orland Park
Sensitivity Testing — Patriot Fire Protection
Four common questions about duct smoke detector sensitivity - Calectro