Klein Tools Premium Electrical Test Kit (Cat. No. RT250KIT) includes an electrical receptacle tester with LCD and a non-contact voltage tester with flashlight. The electrical receptacle tester (Cat. No. RT250) tests the wiring conditions at an electrical outlet and inspects GFCI devices. The LCD displays the voltage, identifies the wiring fault, and the time required to trip a GFCI device. It is designated for use with North American 3-wire 120V electrical outlets. The non-contact voltage tester with flashlight (Cat. No. NCVT3P) has dual-range detection from 12 to 1000V AC or 70 to 1000V AC for a broad variety of low-voltage or standard voltage applications. The bright flashlight can be used independent of, or with the voltage detection function.Warnings Always consult a qualified electrician to resolve wiring problems. Read, understand, and follow all warnings, cautions, safety information, and instructions in the manual before operating or servicing this tester. Failure to follow instructions could result in death or serious injury. Always wear approved safety protection. Features For use on 3-wire, North American 120V electrical outlets only Lightweight, compact tool with pocket clip provides convenient storage and quick access Detects voltage with simultaneous visual and audible voltage indicators LCD readout shows the time required to trip a GFCI device GFCI Receptacle Tester features a large backlit LCD readout of voltage, and clear indication of wiring conditions Patent pending detection of Open Neutral / Open Ground wiring fault RT250: Large LCD Display; Patent Pending Detection of Open Neutral Open Ground Wiring Fault; NCVT3P: Two Distinctive Modes 70 to 1000V AC and 12 to 1000V AC; Flashlight Bright flashlight illuminates work area and may be used independent of voltage detection function Non contact voltage tester's dual-range detects from 12 to 1000V AC or 70 to 1000V AC for a broad variety of low-voltage or standard voltage applications Voltage: RT250 - 135V AC; NCVT3P - 12 to 1000V AC GFCI: RT250 - Yes, Including Time to Trip Device Application: RT250 - Detects and Identifies Common Wiring Problems in GFCI Receptacles; NCVT3P - Non-Contact Detection and Testing of AC Voltage Type: RT250 - GFCI Receptacle Tester; NCVT3P - Dual Range with Flashlight Batteries: 4 x AAA Weight: 0.617 lbs Overall Length: RT250 - 4.5 in (11.4 cm); NCVT3P - 5.70 in (14.5 cm) Overall Width: RT250 - 2 in (5.1 cm); NCVT3P - 0.93 in (2.4 cm) Overall Height: RT250 - 1.1 in (2.8 cm); NCVT3P - 1.09 in (2.8 cm) Depth: 9.13 in Width: 5.13 in Height: 2.75 in Material: RT250 - ABS and Electrical Components; NCVT3P - Polycarbonate Drop Protection: 6.6 ft (2 m) Compliance: RT250: CAT II 135V; NCVT3P: CAT IV 1000V IP67 Display Type: LCD DownloadsBroshure 2Broshure 1Safety Sheet 1Spec SheetSafety Data SheetInstructionsRT250-1330798ART_WEB.pdfNCVT-3P-3PR - WEB MANUAL.pdf