Feature: 1. Wide Voltage Detection Range: This digital voltage tester accurately detects AC voltages from 12V to 300V, making it suitable for both residential and commercial electrical testing needs. 2. NCV Sensing Technology: Equipped with noncontact voltage (NCV) sensing, the tester emits audible reminds when near live wires, allowing you to easily locate breaks in circuits. 3. Torch and LCD Display: The built in flashlight illuminates dark areas, while the backlit LCD display ensures clear visibility of readings, making it suitable for low light work conditions. 4. Dual Sound Visual: Upon touch with live wires, the tester displays Hi with a red backlit and emits urgent beeping sounds, enhancing safety with immediate reminds against electric shocks. 5. Dual Use Screwdriver Bit: The detachable crossing screwdriver bit adds versatility to the tool, allowing you to work both electrical testing and tightening tasks conveniently, maximizing functionality. Specification: Item Type: Voltage Tester Pen Material: ABS Battery: 1 x Battery (not included) AC Voltage: 12-300V, 50 60Hz Measurement Error: 12-300V ±(5%+3) . Package List: 1 x Voltage Detection Pen 1 x User Manual