Draper Expert 30643 Test Probe Set for Stock No. 30641 and 30629 - Draper 23820, This diagnostic probe is suitable for testing 12V and 24V systems. It features a full colour LCD display and a built-in front LED torch for extra visibility. There are pre-set modes for measuring DC voltage, AC voltage, resistance and diode testing. Vehicle components can be activated either in-situ or pre-installation. It comes with a 6m extension cable, ideal for working on the rear of vehicles, trailers and trucks. The probe can be connected directly to the vehicle battery using the clamps or it can be plugged into the auxiliary power socket using the 12V DC adaptor. For convenient portability, it is supplied in a storage carry case. Draper 23820 6-30V Automotive Diagnostic Probe