Compatible with voltage 12V system plus newer 42V system.
1. Safe for low current circuit since tester only draws 3 milliamps at 12V.
2. Automatic voltage identification with blue for 12V and red for 42V systems.
3. Two super-bright LED for visibility under alll conditions.
4. New crystal-clear handle provides 360゜visibility, even under bright light.
5. Extra-long 12' coil 3-1/2" probe length 7-1/4 overall length.
6. Cord remain flexible in low temperatures.