Filteret output, several mounting holes. Power led and signal led indicators, signal led indicates ir-bram is interrupted. LEDs are on the underside of the board;you will have to think carefully about installation if the LEDs are needed to be observed. No complaints about build quality, feed it 5v through ... Read more
the high signal are filtered to prevent a double edge when something cut the IR signal, it have two led on it, one red for the power and a yellow one which is on when something cut the IR signal. you need to count each edge so it will use quit some of your processing, I will use a 74hc4040 8bits counter ... Read more
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