Description Power Supply: Battery Model Number: 445165 Dimensions: 15.2*2.5*1.7cm Display Type: Analog Only DIY Supplies: ELECTRICAL Brand Name: Compatible with Certain Brand Origin: Mainland China Certification: NONE Features: A perfect tool kit for home and electrical industry uses. Ideal design for testing power cables, circuit breakers, wall sockets, junction boxes, fuses, etc. Just press the button, white LED light can be always on when there is an absence of voltage. "Beep" sound and red flashing LED would indicate the presence of voltage. Long life and low power consumption. Totally insulated, no exposed metal or conductive parts. Specifications: Material: PC Size: 15.2*2.5*1.7cm Color: Yellow, Blue Frequency Range: 50 to 500 Hz Test Voltage Range: 90-1000V AC Powered By: 2 x AAA Batteries (Not included) Note: Please allow a little difference due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Included: 1Pc x LED Light Voltage Alert Pen Safely in Bubble Bag.