No Battery Required Door Bell Wireless Ringer Doorbell

In the market, most transmitter are typically powered by batteries, so the users have to consider the battery life and whether the batteries are easily replaceable. Now you have a new option of our kinetic wireless doorbell, it works without any battery. You can know more from my following introduction: - Flash Wireless Doorbell chime is power by 3*1.5V AA battery,  the lifetime of battery is one year.  - Transmitter is self-powered with kinetic technology, it generate electricity by itself continuously when press the bell push button by finger, the lifetime is as long as 20,0000 presses. - Operating range up to 150 metres on open air, which is applicable for villa, multi-story houses or big property.            - The transmitter is waterproof IP44, better suited to withdraw tough working environment.                                    &nb…

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