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A compact USB Voltage/Current tester. 3V-9V Voltage range, 0-3A current Range.
Handy LED display meter for measuring up to 100V and 10A DC. Wide supply voltage range of 4.5 - 30V DC. Ideal for measuring power supplies and other electronic devices.
Simple IR break-beam interrupt sensor module board. This module uses a common IR LED and sensor pair in conjunction with a LM393 comparator IC to drive the output. Arduino Compatible. 5V DC operating voltage.