Voltage Tester Non-Contact Voltage Tester Pen with Adjustable Sensitivity Sound & Light Dual Alarm Non-Contact Design High & Low Adjustable Sensitivity Thoughtful Designs Easy to Carry Ready to Use Item Model Number: HT100,CAT Rating: CAT III 1000V,Product Dimensions: 6.2 x 1.1 x 0.9 in / 157 x 27.6 x 23.1 mm,Voltage Range: High Sensitivity: 12V - 1000V . Low Sensitivity: 48V - 1000V,Net Weight: 0.1 lbs / 0.052 kg