Product Name: Test Pen Voltage Detection Range: High Sensitivity: AC12~1000V; Low Sensitivity: AC48~1000V Judgment Of Zero Live Line: According To The Backlight Color Change: Yellow---zero Line Red---live Line Signal Strength Display: Yellow---weak Signal Indicator Light; Red---strong Signal Indicator Light Signal Strength Indication Method: When The Signal Is Weak, The Beep Will Be Slow And The Yellow Light Will Be On; When The Signal Is Strong, The Beep Will Be Rapid And The Red Light Will Be On. Alarm Method: Sound And Light Alarm Probe Shape: Flat And Elongated Shape Infrared Pointing Light: Yes Flashlight: Yes Power Supply: 21.5V AA Batteries Safety Level: CAT.III 1000V CAT.IV600V Features: 1. Newly Upgraded Non-contact Test Pen, Zero-contact High-voltage Test Pen 2. Multifunctional And Non-contact, Choose The Instrument That Suits Your Daily Measurement Needs And Keep Improving Your Work. 3. Measurable Range 12V/48V-1000V, High-quality Sensor, Intelligent Induction Of Electric Field, More Convenient And Safer 4.ABS Engineering Insulating Plastic, More Intelligent Sound And Light Alarm And Sensitive Switching 5. Save Time And Effort, 0-contact Test At Start-up, Higher Safety Factor Of Insulation Operation 6.0 Contact Safety Inspection And Electrical Inspection The Safety Factor Is Greatly Improved Compared To The Contact Type 7. Sensitive Switching 12V48V1000V, Sensitivity Switching Suitable For More Working Environments And More Sensitive Measurement 8. LED Flashlight Lighting, Which Can Be Turned On When Used In Dark Environments. The Flashlight Function Facilitates Measurement And Saves Worry. 9. Default 48-1000V, High Sensitivity 12-1000V, High Sensitivity Can Be Used To Find Breakpoints To Avoid Misjudgment And Damage To The Cable. 10. Live Wire Recognition Audible And Visual Alarm Prompts, Live Wire Recognition Beeps Rapidly And The Red Light Is Always On 11. Compact Size, Easy To Operate, Good Ergonomic Design, Comfortable To Hold, Excellent Materials, Strong And Durable Specifications: Package Included: 1 Box* (1 Test Pen) Or 1 Box* (1 Test Pen, 2 Batteries)