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the ECHO port will automatically become low after 40MS
This is a 12V 16-Channel Relay Interface Board with 15-20mA Driver Current for each individual relay
Built-in stabilivolt
The resistance between the outer two25pins is always 100K ohm
When the detected distance value of the target is less than the set threshold
Normally Open Vibration Sensor Module 51K the ECHO port will automaticallyThis Normally open vibration sensor module is for a variety of vibration trigger function, reported theft alarm, smart car, electronic building blocks and so on. Features The use of wide voltage LM393 comparator. Using the companys high sensitivity vibration switch, the default with SW 18015P vibration sensor. The comparator output, the signal clean, good waveform, driving ability, more than 15mA With a fixed bolt hole, easy to install. Specification
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