The Klein Tools NCVT5 Dual Range Non-Contact Voltage Tester, 12-1000VAC, with Laser Pointer provides non-contact detection of AC voltage. The higher the voltage sensed, or the closer the tester is to the voltage source, the more LEDs light up and the audible indicator beeps at a greater frequency. Screw-thread battery cap with O-ring ensures protection against dust and water ingress. The NCVT-5 includes a laser pointer that can function independent of or simultaneously with the NCVT.