Handheld fly zapper is a device used to kill flies or mosquitoes. Its shape is like a badminton or lawn tennis racquet and is operated by the batteries which are placed in its handle. When it’s turned on, then there’s an electric current. When it’s just turned off, the electric current is still in the wire mess. Basically, it needs some time to cool down. That’s why, it’s important if you know the safety guide to prevent it from hurting you or other people accidentally.

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