- The NCVT3PKIT from Klein® includes a dual range, non-contact voltage tester with integrated flashlight and an AC/DC voltage tester. The NCVT-3P with flashlight is a non-contact voltage tester that detects 12 to 1000 VAC and 70 to 1000 VAC and indicates the presence of voltage in cables, cords, circuit breakers, light fixtures, switches, outlets and wires as well as AC voltage in doorbells, thermostats, low voltage lighting and irrigation systems. The ET45 AC/DC voltage tester is designed as a simple, easy to use tester to check, verify or troubleshoot common residential electrical applications. This tester does not require batteries and features a pocket clip for convenient carrying.