Lisle (LIS27430) 24V Heavy-Duty Circuit Tester
Features and Benefits: Quickly tests voltage up to 28 Volts. Works on any circuit up to 28 volts including many heavy duty applications on large trucks and farm implements: heavy duty probe, cord and clamp. The probe is insulated with high visibility shrink tubing to prevent the possibility of shorting the side of the probe to other components. Comes with a strain relief spring on the cord. Also works well on 12V applications.