Field programmable digital tachometer for shaft speed as low as 1 RPM, microprocessor based. Accuracy + 0.4%; 1/8 DIN housing 1/2″ digital display. Operating range 500 to 30,000 input pulses per minute. Faceplate gasket kit gives a NEMA 4X rating when installed in similarly rated enclosure. 5Amp form C relay output. Can display rate, RPM,Time, Count, and Total. Universal power supply – One model for both 120VAC and 240VAC input.