Conventional smoke detector 12v  with UL and EN approvals

Feartures:

1) Advanced detection and discrimination algorithms
2) Easy installation and maintenance
3) Polished low-profile housing design
4) Durable sensor head, no need for replacement
5) SMD circuit board design: satisfactory quality and reliability guaranteed
6) Integrated heat detector for SD119-2H and SD119-4H models
7) N/C (normal / close) and N/O (normal / open) relay output ways for option
8) AR (auto reset) function for security systems (optional for 4-wire models)
9) Sensor base: standard and Schottky diode style for option
10) With two LED, more 360 degree visual angle