ELECALL Name Non touch Voltage test pencil Model EM-4 Voltage test range 50-1000ACV(50-500Hz) International Safe Standard EN61010-1/600VCAT III Work Temperature -10-50C Storage Temprature -20-60Degree Humidity <8s%RH Battery 2*1.5v(AAA Type) Size 146*25*22mm Weight 26g Non-contact test pen, safe, convenient to use. Pen clip design, portable for use. Wide AC voltage range: 50-1000V With High accuracy resistance inside Translucent pencil head with LED The red light will be flash and the item will alarm when detect the electric With Auto-off Function