Offer smoke fire detector(skype:mandyjj1)

Widely used for room, hall, kitchen, party, no smoking place, Hotel, Factory Alarm mode: while smoke density reach the limited, it gives off alarm warning as well as sending wireless signal to alarm panel, High sensitivity, interconnect up to alarm. Unique attery missing?lockout. Customized. Specification: 1.Battery operated: DC 9V. 2. Rechargeable lion battery 10 year 9 DC battery.