Fangrui Product Details 1. Wintact Wt3010 Led Ac Voltage Tester Non-contact Detector Pen 12-1000v Ac Voltage Detector 2. Features 3. Ac Voltage Detection Pen, Ac Voltage Measurement Range Is 12-1000v, 5060hz, Easy To Detect. 4. With High And Low Sensitivity Switches, The Sensitivity Can Be Adjusted For Flexible Measurement. 5. It Adopts Humanized Pen Holder Design, Novel Appearance, Stable Performance, Safe And Portable. 6. Non-contact Measurement, When Close To Ac Voltage Within The Specified Voltage Range, It Will Emit Led Lights And Beep. 7. Low Power Consumption, Specially Used For Home Circuit Detection, Suitable For Electricians. 8. With Flashlight, Automatic Shutdown Function (about 3 Minutes), It Can Continue To Work In Dark Environments. 9. Specification 10. Ac Voltage: 12v -1000v 11. Frequency: 50hz60hz 12. Alarm Mode: Soundlightlcd Screen 13. Display: Lcd Display Screen 14. Flashlight: Yes 15. High And Low Sensitivity Switch: Yes 16. Ac Voltage Detect: Yes 17. Low Voltage Indicator: Yes 18. Auto Power-off: Automatically Shut Down When There Is No Induction Or Operation For 3 Minutes. 19. Battery Type: 2 X 1.5v Aaa Battery (not Included) 20. Size: 167.45 X 26.30 X 21mm 21. Weight: 47.4g 22. Operating Environment: 0-40 Degree C, Relative Humidity: Less Than Or Equal . 23. Storage Environment: -10-50 Degree C