EASY TO READ: This Heavy Duty circuit light tester with highly clear LED digital display screen, clear&visible digital readouts for day and night. Add a buzzer function, the test will be accompanied by a buzzer, giving you more convenience to test the circuit.

DC 4-60V WIDER VOLTAGE TEST RANGE: The DC 4-60V circuit tester gives you more options for testing different vehicles. Widely used in 3v 6v 12v 24v 48v 60v circuit system. Ideal For Car, Truck, RV, Boat, Motorcycle, Excavator, Bus, SUV, etc.

BIDIRECTIONAL VOLTAGE TESTING: This upgrade circuit test light is a bidirectional voltage tester. You can attach the alligator clamp either to negative or positive ground, there is also a light emitting diode on the circuit board for polarity indication, red light indicates positive polarity and green light indicates negative polarity.

DESIGNED FOR COMFORT AND SAFETY: This voltage test pen has a protective probe cover designed to protect you from accidental injury; Equipped with a spring cord that extends up to 102 inches, increasing the flexibility of test scenarios and ease of carrying and storing; When the test voltage exceeds 60V, the screen will display OL to remind you to stop the test immediately.

100% SATISFACTION: If you have any dissatisfaction for any reason, please feel free to let us know and we will do our best to assist you.