Features: It will send out multiple alarms through sound and light. When the voltage is detected, the tip will send out red light and beep. Non-contact detector determine the presence of magnetic field without contact. You can use this non-contact AC voltage detection to check whether a cable, wire or socket contains AC voltage. Lightweight, compact tool with pocket clip provides convenient storage and quick access-. It can be used for home appliance repair, circuit inspection and DIY. Perfect tool for home users, electrical and electrical system engineers, etc. Package Includes: 1x Voltage Tester Specifications: Material: ABS Size: approx 158x24mm/6x0.9in Power supply: 2xAAA Flashlight: LED Auto-power-off: 5 minutes AC voltage range: 12-1000V AC 50/60Hz Color: red/black/yellow note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.