Features:
100% brand new and high quality
Made of high quality material, durable and practical to use
Pull the battery cover and replace the battery easily
Automatically distinguish between neutral and firewire
Sound and alarm LED
Automatically select 3 types of sensitivity. (High, Medium, Low)
Professional non-contact AC voltage detector
Voltage sensitivity is 12 V to 1000 V AC
AC voltage sensitivity is adjustable
Sound and light indication
Automatic shut-down
Safe, professional and easy to use
Small and compact pen for easy transportation

Specifications:
Voltage Sensitivity: 12 V AC to 1000 V
Frequency: 50-60Hz
Alarm Mode: Sound And Light
Power Automatically Turns Off: Yes
Working Temperature: 32~122℉ (0-50degree Celsius)
Storage Temperature: -4 to 140 & #8457; (-20 to 60 & #8451;)
Battery: 2x1.5V AAA Battery (Not Included)
Size: 15.7x2.63x2.37 cm(Approx.)
Optional Color: Yellow, Black, Red (As pictures show)

Package include:
1 * Voltage Tensioner Voltage Pen