The 4mm Banana Jack attenuator from PJP allows a degree of safety when connecting traditional oscilloscope probes to circuitry for voltage measurement. They allow for a more secure connection of both the probe and the ground wire into the oscilloscope. The 4mm banana connection allows reliable, safe connections across CAT II, CAT III and CAT IV hazardous low voltages. The attenuator plugs normally via BNC male connector into the scope, and has two 4mm banana socket outputs for the probe and ground lead to plug into to take your measurements.
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