Optical Smoke Detector
OP921 - Optical Smoke Detector (or OP921 Photoelectric Smoke Detector).
S54320-F4-A2 is the OP921 - Optical Smoke Detector (also known as a plug-in, two-wire addressable photoelectric smoke detector).
Other items in Sensors (Proximity, Pressure, Temperature, Flow) ..
KEYENCE
Multi-voltage power supply,built-in amp.photoelectric sensors PW series
Multi-voltage photoelectric sensor manufactured by Keyence Corporation, featuring a built-in amplifier and a diffuse-reflective operating head.
OMRON
Photoelectric Sensor
Photoelectric Switch is a compact and reliable sensor used to detect objects without touching them
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