Description: Electrical Circuit Tester is ideal for checking circuits, fuses, switches and wiring on automobiles, trailers, boats, motorcycles and other low voltage systems. Connect the alligator clip to ground, then take the probe to test the circuit. If the light is on, there is electricity. This circuit tester will save your time and speed up work, perfect for automotive use. Specifications: Material: AS plastic, carbon steel Handle Color: As Pictures Show Pen Length: 17.3cm/6.8inch Probe Length: 8.3 cm / 3.3 inch Line length: 96cm / 37.8inch Clamp capacity: 20 AMP Bulb: 3 watt bulb (replaceable ) Voltage Range: 6V-24V Package Included: 1 x Electric Wire Circuit Tester Note:< /p> 1. Please allow 1-3cm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 6V-24V test rangeElectrical circuit tester is designed for checking 6V - 24V car electrical circuits. Lightweight design and super convenient to carry, you can take it anywhere you go. Wide Circuit TestingThis probe pen is ideal for checking circuits, fuses, switches and wiring automobiles, trailers, boats, motorcycles and other low voltage systems. Premium Quality The handle of the tester is made of AS plastic and the probe is made of quenched and tempered carbon steel with chrome plated . The sharp steel probe easily pierces wire insulation to check circuits. Long spring wireLong spring wire can stretch about 1 meters, and the wire is thickened so that the wire will not burn out when the room temperature is increased. Tester bulbThe light in the handle turns on when the circuit connection is completed, and this 3 watt bulb is replaceable, you can change the bulb easily.