Features:
(Home security smoke alarm sensor SFL-903)

1 Photoelectric detection.
2 Using low-power CMOS microprocessor
3 Special moisture-proof design
4 Independent. Networking. Wireless output optional
5 Manual testing, manual reset function
6 Double-sided PCB process structure unique design
7 Pest control, dust-proof anti outside light interference

Working principle:
To remind or contain gas leak quickly when leaked gas reachers the alarm concentration

Application: Indoor