The Logic Probe Kit is a handy, reliable, and inexpensive logic probe that was designed to operate with voltages between 5 and 20 volts. This logic probe is the ideal tool for troubleshooting CMOS and TTL digital circuits. This kit features a visual indicator that consists of a red LED and a green LED. The red LED indicates a High (1) logic state, and the green LED indicates a Low (0) logic state. This logic probe is small, easy to build, and easy to use.

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Operates from the power of the circuit being tested. Size of PC board: 3 5/8” x 1 1/4”. Complete with all parts, PC board and instructions. Skill Level 1.