The sensor USES the high quality FR - 04 double material, treatment of nickel plating and surface, have fight oxidation, electrical conductivity, and life has more superior performance, with potentiometer sensitivity adjustment; has a fixed bolt hole, convenient installation The LM393 use of wide voltage comparator, signal clean, good waveform, driving ability is strong, for more than 15 mA Rain drops sensor module adjust sensitivity by potentiometer, the working voltage of 3.3 V to 5 V; output format: digital switch output (0 and 1) and analog AO voltage output The raindrop board and the control board are separate, easy to lead the line, TTL level output, TTL output valid signal is low. Drive capacity of about 100MA, direct drive relays, buzzers, small fans, and so on. Easy to use : Connected to 5 v power supply power lights, no water droplets on induction plate, the DO output for the high level, switch lights out, a drop of water drops, the DO output for the low level, switch indicator,brush away the water droplets, return to again, the output high level state.
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