indoor smoke detector, smoke alarm, fire detector, fire alarm,cheap&qualified detector

Specifications 

Micro smoke alarm 
10 years lifetime battery 
88dB/3M sound 
Small, simplicity and elegance 
Dia.:50.8mm(2"), Ht.:42.5m(1.67") 

 Headache with changing battery? Worried about size?

Now the smallest Micro smoke alarm coming

Features:
1) Photoelectric sensing technology 
2) Low-sensitivity warning
3) Low-battery warning & 10 years lifetime warning
4) Small, simplicity and elegance 
5) 10 Years litetime batter opearated
6) SMD circuit board design: satisfactory quality and reliability guaranteed 
7) Test button for battery and alarm operation verification
8) Loud alarm signal exceeding 85dB in alarm mode 
9) Easy installation and maintenance
10) Five-year warranty

11) EN14604 pending