Fangrui Product Details 1. Bside Asts Circuit Analyzer Plug Power Tester 2. Power Supply: 1.5v X 3 Aaa Battery Power Supply (shipping Does Not Include) 3. Power Supply Voltage: Us Plug 110v, Eu Plug 220v, Uk Plug 230v 4. Voltage L-n (rms): Range: 85-99.9v100-265v; Resolution: 0.1v1v; Accuracy: About 2 Percent+0.2v1 Percent+1v 5. Voltage L-n (p-p): Range: 121-374v; Resolution: 1v; Accuracy: About 1 Percent+1v 6. Voltage N-e (rms): Range: 0-10v; Resolution: 0.1v; Accuracy: About 2.5 Percent+0.2v 7. Frequency: Range: 45-65hz; Resolution: 0.1hz; Accuracy: About 1 Percent + 0.3hz 8. 5-minute Automatic Shutdown, Backlight Design Is Convenient To Use 9. Circuit Fire Hazards, To Protect The Safety Of Electricity 10. Can Detect The Circuit Load Capacity, In Order To Or Repair In A Timely Manner 11. Small Shape, Does Not Occupy Space, Suitable For Home Use 12. Size: 137 X 60 X 62mm 13. Weight: 160g (without Battery) 14. Packing List: 15. - Circuit Multimeter X 1 16. - Storage Bag X 1 17. - Instruction Manual X 1 Suitable For Everyday Use