供应家用煤气报警器
formance stability and reliability;
3 .SMD circuit board design with FR4 double sides PCB satisfactory quality and reliability guaranteed;
4. Test button verifies alarm operation any time;
5. Audible and visible warnings;
6. Silence /Test Button with 3 LED indicators;
7. Low battery warning;
8. Fault signal warning;
9. Easy installation and maintenance;
10. No battery is required for circuit control;
11. Loud alarm signal exceeding 85dB(A) at 3m;
12. Easy installation and maintenance;
13. Compl
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