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  • Buy it.

    posted by guijusto on 12/29/2009

    Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month


    -- Well built. Good components, made by Honestdz (honestdz.com). It generates 40Vac from the 9Vcc battery and that's why the sound is so loud (110db near piezoelectric speeker).

    -- Supports 2^12 combination codes, so you can buy a lot of them and use it together without problem. You can easily change the codes, just soldering some pins on the circuit board.

    -- It is sold with batteries (2) - remember it costs less than $10.

    -- Its very noisy.

    -- Cheap, ready to use.


    --The remote range is not very good - about 10 meters-, although you can put an antenna in the receiver (open it and look for "antenna" on the receiver board).

    --The alarm works for only 30 seconds. After that it stops.


    Buy it. Its worth. If you like using microcontrollers, like me, you can do a lot of projects with it, improving many features and using the hardware, like the remote control.

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