Hand-held digital logic probe provides convenient and precise use in the measurement of logic circuits. It displays logic levels (high or low), pulses and voltage transients down to 25 nanoseconds. High intensity LED readouts provide instant response to the logic state. Tests all logic families (TTL, LSI, CMOS, ECT.) Captures pulses to 25ns (20MHz.) Audio beeper, two sounds HI and LOW! Includes Memory function with Colored LED’s! Input overload protection. Logic probe is circuit powered. Reverse polarity protection too! Other Features: Working voltage 4-18 VDC, Frequency response 20MHz, Minimum detectable pulse width 25ns, Input impedance 1MW, Input overload protection ±220VAC/DC 15s, Supply voltage protection ±20VDC, Pulse indicator flash time 500ms, and Operating temperature 32° - 122°F (0° - 50°C.) 1 Each Logic Probe III (assembled) TEQLP3$29.99 Copyright © 2003-2008 E-Clec-Tech. All rights reserved. All other materials and logos are copyrighted by their respective owners, or companies.