Description: It is made of chrome vanadium steel, and the whole frequency is quenched. The display screen adopts liquid crystal display, which can clearly observe the voltage value. Indicator light The LED light measurement line lights up. Gorgeous appearance Curved design, contact buttons, ABS plastic housing, sturdy and durable. It will flash and beep when the device close to AC voltage greater during the specified voltage range without touch the measured object, and also with the beep sound and LED to indicate to support enough safety measuring application Shining prompt of low voltage LED and alarm can warn you to replace the battery in time, while the white LED light allows operating even on dark environment; Auto power off after no operation for 5 mins to save energy Voltage frequency can be distinguished by beep and LED indicator. It's loud enough to hear over moderate machine equipment noise. Small in size, easy to store in tool box or carry in your pocket Easy TO Carry And Handle Durable polycarbonate plastic resin ensures a compact build and its pocket clip allows easy handling. Specification: Product detailed size: 14x25x10mm/0.55x0.98x0.39inch Material: Chrome vanadium steel + ABS plastic Color: Yellow + Black AC Voltage Test Range: 12~250V Judging zero - line fire: judging by the signal strength, the signal strength higher is the fire line Indication: by different frequency alarm sounds and red and green light Automatic shutdown: no operation in 5 minutes Package Includes: 1 Piece Night vision blue screen digital display test pencil