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66% OFF Geekcreit® Interruptor de Controle Remoto Sem Fio de 433Mhz 4CH 12V Com 2 Transmissores US$9.99 US$29.00 View It

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johnny 15/03/2017

I ordered two of these units and both worked fine apart from random triggering of the relays which could be a problem on a door etc. I managed to cure the problem by fitting some filtering on power supply i.e. a ferrite core on the low voltage cable to the unit and a small capacitor across the low voltage terminal on the board, 22uf seems to work ok, had no problems since, so it seems to be mains born interference.

Comentários (2)

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Arjan68 Tnx for the tip, I have the same problem, gonna try it
Resposta 08/04/2017

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SantoshT which ferrite core you use? and what is voltage for 22uf capacitor u use?
Resposta 15/01/2019

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