FK909 Audio Continuity Tester
This simple test unit gives a rapid and audible indication of resistance in home appliances and industrial wiring between 1.0 Ohm and 500KOhm. The resistance of the circuit under test forms part of an oscillator in which level and frequency are inversely proportional to the circuit resistance. The FK909 may also be used to detect moisture content.
Power supply9VDC @150mA
Dimensions 29.46mm x 35.4mm x 15mm