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3V power supply which is compatible with Arduino UNO/Mega
Operating voltage : 5V
All inputs are protected from damage due to static discharge byinternal diode clamps to VCC and ground
The flip-flops are also called as latching devices meaning it can remember one single bit of data and latch the output based on it
RFID Tag 125khz small in size
Ultrasonic Sensor ( Distance Measuring Module ) Recorder Module 3V power supply which isIntroduction: HC SR04 ultrasonic module can offer non contact distance sensing function, the range from 2cm to 400cm. and the range accuracy is up to 3mm; the module includes ultrasonic transmitter, receiver and control circuit. The sensor measures distance using sonar; an ultrasonic (well above human hearing) pulse is transmitted from the unit and distance to target is determined by measuring the time required for the echo return. The module is based
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