Klein Tools View the Collection 2-Piece Non-Contact Voltage Tester with Laser Pointer and GFCI Outlet Tester Tool Set for $19.97. Shipping is free on orders over $45. Here is a screenshot for reference. The NCVT5KIT includes a non-contact voltage tester with laser pointer and a GFCI receptacle tester. The NCVT-5 automatically detects and indicates voltage (12 – 1000V) allowing broad application. The RT210 will troubleshoot the most common wiring problems in standard and GFCI receptacles.