ELECTRONICS INTERNATIONAL OPT-1-FV VOLT/FREQUENCY FOR TURBOPROP

AC BUS VOLTAGE & FREQUENCY, TSOd/PMAd (no STCs). The “-60” instrument is for a 60 Hz. bus and the “-400” instrument is for a 400 Hz. bus. Accurate Digital Display can be switched between Voltage and Frequency, displays in Volts and Hz. 2 1/4” Mount, 3.65” Depth, 10 Oz. Instrument.