USES: Is widely used in motor speed detection, pulse count, the location limit, etc., with 2 road detection. The module features: 1, using imported trough type optical coupling sensor 2, groove width 5 mm. 3, the output state light, lamp output level, the output low level light. 4, covered, the output low level; Without sunscreen, the output high level. 5, the comparator output signal is clean, good waveform, driving ability is strong, for more than 15 ma. 6, the working voltage of 3.3 V to 5 V 7, output form: digital switch output (0 and 1) 8, has a fixed bolt hole, convenient installation 9, small board PCB size: 3.2 cm x 1.7 cm 10, use the LM393 wide voltage comparator Module USES: 1. The module without slot, the receiving tube conduction, module DO output low level, shade, the DO output high level; 2. DO modules can be connected to the relay, limit switch, and other functions, can also with the active buzzer module, alarm. Shipping list: Speed measuring sensor module 1 2 road, with two slot type optical coupling, the two sensors small PCB, 20 cm dupont line 8
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