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From the touch of the "brush" to the "canvas" there will be light lines
and the phototransistor is on the other side of the finger
5 ~ 20V DC voltage
file cabinets
Seeking the light
1/8 Inch Water Flow Sensor YF-S401 ultrasonic From the touch of the1 8 Inch Water Flow Sensor YF S401 The YF S401 Water flow sensor is a small device comprising a plastic valve body, a water rotor, and a hall effect sensor. As water flows through the Water flow sensor, the internal rotator changes its speed in accordance with the rate of flow, and the hall effect sensor outputs a series of digital pulses. This allows the flow rate to be accurately measured using a microcontroller. This Water flow sensor is ideal for
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