Features: This advanced tester detects live wires without direct contact, ensuring safe operate for home circuits and professional electricians. Works with 30 1000V ranges. Features bright LED lighting for clear visibility in dark environments, enabling accurate circuit checks during nighttime or low light conditions. Make of quality ABS for superior impacts resistance and long lasting performances in industrial or outdoor work environments. Equipped with color changing backlight and alerts to instantly identify voltages (11V 450V) and distinguish live/neutral wires via electric field intensity. Lightweight and space saving for easy storage in toolkits or pockets, ideal for electricians and technicians needing mobile voltages testing solution. Specifications: Component: ABS Measurement Ranges: 30~1000V, 11V~-450V Frequency: 50~60Hz Working Temperature: 0-40℃ Storage Temperature: 10-50℃ NCV: YES Double Color Screen: YES Backlit Screen: YES Auto Off: 3 minutes without operating Battery: 2xAAA Battery Requires(NOT Include) Size: about. 170x31x26mm/6.69x1.22x1.02in Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1pc Tester Pen Professional Voltages Detector Pen With Flashlight Visual And Audible Alerts For Quick Wire Testing In Dark EnvironmentABS Material Circuit Tester With Sound Alarm & LED For Home Electrician Use Professional TesterProfessional Voltages Detector Pen With Flashlight Visual And Audible AlertsNCV Tester Voltages Detection 30-1000V Electrical Testing Tool