AH-0621 UL Photoelectric Smoke Detector

UL Listed.
The standard detector is 2-wire or 3-wire with base.
For 4-wire type just add one relay output module on 3-wire base. Simple and easy module placement enables wider application.
Twin-color LED display enables viewer to easily identify the current status of detector.
Contacts material is highly acid-resistant and rust-resistant.
Detector is made of high endurance, solid and colorfast Fire-proof plastic.
Non-loosening screws on base terminal for easy installation.
Detector has passed strict EMC test, which greatly eliminates false alarms caused by interference from nearby sources.