HC-SR04 ultrasonic distance measuring transducer for robotics and sensor builds
HC-SR04 carries an ultrasonic transmitter, a receiver and the control circuit; trigger it and a run of 40KHz pulses leaves the unit, then the echo returns from whatever sits ahead
Power supply 5V DC; quiescent current under 2mA; effectual angle under 15°; distance 2cm to 500cm; resolution 0.3 cm
Package content: 5pcs HC-SR04 with a little gift
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