Doubleway voltage test When the crocodile clip is on the negative electrode and the probe touches the positive electrode, the digital display shows the voltage and the green light is on. When the crocodile clip is on the positive electrode and the probe touches the negative electrode, the red light is displayed. quality materials The handle is made from ABS insulation material, offering corrosion resistance, durability, electrical insulation, safe use, and protection against electric shock. Chromeplated crocodile clips and thicker test leads enhance safety and reliability. design Retractable spring lines with a normal length of 23.6 inches, extendable up to 5.9 feet for flexibility and convenient use. The device body length is 4 inches, with a 3inch detection needle. Upgraded numeric display provides accurate voltage readings, with clear visibility both day and night. Low current draw minimizes the risk of damaging sensitive circuits. Function and applications Suitable for automotive fuse testing, generator testing, voltage test circuits, and checks of positive and negative pole polarity. Useful for quickly inspecting various vehicle circuits, including headlights, taillights, and turn signal circuits. Compatible with universal 3V, 6V, 12V, and 24V circuits. Use scenarios Incar electrical diagnostics: test fuses and wiring during repairs to verify circuit integrity. Vehicle lighting checks: confirm proper operation of headlights, taillights, and indicators and identify polarityrelated issues. Battery and accessory wiring tests: assess 12V or 24V circuits in vehicles or trucks to ensure correct voltage levels and safe operation.