Widget Man ZSF2 -- Programmable Spark and Magneto Filter 767571999255

CLEAN DIGITAL SIGNAL FROM ANY SPARK COIL!
The ZSF2 can “ring proof” the signal from any spark coil, providing clean 12V square waves from the spikiest magneto or longest-discharge COP coil. With selectable “blanking” times from 520 microseconds to 4.3 milliseconds, it will even clean up “multi-fire” coil signals from aftermarket CDI boxes like the MSD 6/6AL. Smaller than a half dollar and double-sealed with urethane over epoxy, it's rugged enough to live beside the engine and tiny enough to hide anywhere. Four simple wires hook it up (power, ground, coil-in and digital-out) and 3 simple DIP switches select the re-trigger interval. The switches are changeable “on the fly” to make finding the right setting for your engine a snap. Jumpy tach signals have met their match!