Used place,使用范围

HoMES, shops, factories, mines, offices and some other areas.

Instruction,使用说明

This new heart-shaped alarms have been improved based on existing sirens .While for the old sirens the magnetic switches are hard to be slided and BATerries are not easy to be bought,the improved sirens have used the self-locking switches,whose defences system can be easily set up once receive a slightly press and AAA batteries/C size batteries are avAIlable in any shops.Besides these two advantages,the service life for the new alarms can be up to 18 months.

While keep the basic alarming function ,the shape of the sirens has changed to heart-shaped to looks more ornamental.So that the improved alarms can be bought as your promotional gifts by printing your ads on them.Also you can send them to your friends as small presents to expressgood wishes to them.

Installation method,安装方法

开关switch

主机main engine

副机vice engine  

电池盒盖battery compartment cover

电池（-朝下）baterry(negative pole on the lower position)

电池（+朝下）baterry(postive pole on the lower position)    

已安装示图installed picture

双面胶sticker

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