Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.

• GFCI Outlet Tester detects the most common wiring problems in standard and GFCI receptacles
• Electrical outlet tester works on GFCI outlets and confirms operation of the ground fault protective device
• Built to withstand a 6.6 ft. (2 m) drop
• Operating temp: 32-Degree to 140-Degree Fahrenheit (0-Degree to 40-Degree Celsius)
• Nominal Voltage: 110/125V AC at 50/60Hz in 3-wire outlet

The NCVT-3P is a non-contact voltage tester with an integrated flashlight. The voltage sensor detects 12 to 1000V AC 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. Includes both visual and audible signals. The NCVT-3P is rugged enough for any job site.

• Non contact voltage tester's dual-range capabilities allow tester to detect from 12 to 1000 V AC or 70 to 1000V AC for a broad variety of low-voltage or standard voltage applications
• Detects voltage with simultaneous visual and audible voltage indicators
• Bright flashlight illuminates work area and may be used independent of voltage detection function
• Green light indicates no voltage
• Lightweight, compact tool with pocket clip provides convenient storage and quick access
• Auto power-off feature conserves and extends battery life
• CAT IV 1000V rating provides expanded operation and protection
• Screw-thread battery cap with O-ring ensures protection against dust and water ingress
• 6.6 ft. (2 m) drop protection
• IP67: Dustproof and waterproof
• Conforms to CE requirements
• US Patent 10,073,142, D750,985 and other patents pending

Klein Tools RT110 Receptacle Tester detects the most common wiring problems in standard receptacles. Conditions indicated: wiring correct, open ground, reverse electrical outlet, open hot, open neutral, hot/ground reversed. Conditions not indicated: quality of ground, multiple hot wires, combinations of defects, reversal of grounded and grounding conductors.

• Outlet tester's light sequence on receptacle tester indicates correct/incorrect wiring
• Receptacle tester conforms to UL std 1436, certified to CSA std C22.2 #160
• Operating temp: 32 degree F to 140 degree F (0 degree C to 40 degree C)
• Built to withstand a 6.6 ft. (2 m) drop
• Nominal voltage: 110-Volt/125-Volt AC at 50 Hz/60 Hz in 3-wire outlet
• Designed to detect the most common wiring problems in standard receptacles

Klein Tools GFCI Receptacle Tester With LCD. Gfci Receptacle Tester Features A Large Backlit Lcd Readout Of Voltage And Clear Indication Of Wiring Conditions. LCD readout shows the time required to trip a GFCI device. Detect and identify common wiring faults. Patent pending detection of Open Neutral Open Ground wiring fault. Auto-Hold is convenient for hard-to-reach outlets. Bright green and red LEDs illuminate for visual indicators. CAT II 135V safety rating. Durable 6.6-Foot (2 m) drop protection. For use on 3-wire, North American 120V electrical outlets only. Mfg #RT250

• Gfci Receptacle Tester Features A Large Backlit Lcd Readout Of Voltage And Clear Indication Of Wiring Conditions
• LCD readout shows the time required to trip a GFCI device
• Detect and identify common wiring faults
• Patent pending detection of Open Neutral Open Ground wiring fault

ET60 is a solid-state, low impedance, electronic voltage tester. It measures AC/DC voltages up to 600V. The ET60 does NOT require batteries; it is powered by the applied voltage. It is excellent choice for testing voltage in electrical circuits, at outlets, in light fixtures or anywhere else where AC/DC voltage testing is required.

• Voltage Tester for AC/DC voltage from 12-600V at nine useful levels aligned with commonly used voltages
• Uses standard replaceable multimeter test leads for versatility
• CAT IV 600V modern solid-state design for safety
• Easy to use bright LED display clearly reports the voltage present in the circuit being tested
• Integrated test-lead holders are used for lead storage or for holding the probes correctly spaced for insertion into tamper-resistant US-style outlets
• Inherent low input impedance reduces the possibility of falsely reading ghost or stray voltages on non-energized circuits
• Batteries not required, as tester is powered by the applied voltage in the circuit being tested

Klein Tools NCVT-4IR is a voltage tester. It provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires. It also features an infrared (IR) thermometer, making it the perfect choice for HVAC professionals.

• Voltage Tester designed specifically for HVAC applications
• Non-Contact Voltage Tester provides non-contact determination of AC voltage in cables, cords, circuit breakers, switches, outlets and wires, and AC voltage in security, entertainment, communications, environmental control, and irrigation systems
• Detects AC voltage from 12 to 1000V with visual and audible indicators
• 4:1 distance-to-spot ratio IR thermometer with user selectable Degrees Fahrenheit or Degrees Celsius from -22 to 482-Degree Fahrenheit (-30 to 250-Degree Celsius)
• Convenient laser pointer to target measurement area for temperature measurement
• Backlit LCD display with 0.1-Degree resolution
• Auto power-off conserves and extends battery life
• Screw-thread battery cap with O-ring ensures dust and water resistance
• Lightweight, compact tool with pocket clip provides easy storage and quick access

Klein Tools Digital Circuit Breaker Finder With GFCI Outlet Tester. This Circuit Breaker Finder Can Quickly And Accurately Locate The Correct Circuit Breaker In A Panel Corresponding To The Circuit To Which An Electrical Outlet Or Fixture Is Connected. GFCI tester consists of two parts: a Transmitter connected to the electrical outlet or fixture, and a Receiver used to scan the panel to locate the correct breaker. Receiver delivers clear visual and audible indications when the correct breaker has been located. Operates on 90-120V AC circuits. Transmitter incorporates a GFCI outlet tester to inspect the wiring condition at the electrical outlet and test GFCI devices. Transmitter docks in the Receiver for convenient storage as a single item when tester is not is use. Transmitter incorporates a three-pin plug for connecting to North-American-style grounded electrical outlets. The transmitter may be connected to other electrical fixtures using optional accessories which are sold separately (Cat. No. 69411). Receiver powers off automatically after approximately three minutes of non-use to conserve battery life. Transmitter is powered by the circuit when connected to the electrical outlet or fixture. Low battery indicator. Easily accessible battery compartment. Uses one 9V battery in receiver only; Transmitter does not require a battery. Built to withstand a 6.6-Foot (2 m) drop. CAT II 120V safety rating. Mfg #ET310

• This Circuit Breaker Finder Can Quickly And Accurately Locate The Correct Circuit Breaker In A Panel Corresponding To The Circuit To Which An Electrical Outlet Or Fixture Is Connected
• GFCI tester consists of two parts: a Transmitter connected to the electrical outlet or fixture, and a Receiver used to scan the panel to locate the correct breaker
• Receiver delivers clear visual and audible indications when the correct breaker has been located
• Operates on 90-120V AC circuits

Klein Tools Advanced Circuit Tracer Kit. The Advanced Circuit Tracer Kit Provides Reliable Tracing Of Energized Or Non-Energized Breakers, Fuses, And Wires. Easily adjust receiver sensitivity level to detect the transmitted signal through drywall, cement block, and underground. Versatile applications include tracing wires, conduit or pipes, or a single wire in a bundle. Audible beep and visual indicators on receiver denotes signal strength. Receiver features a flashlight for illumination in low-light areas and NCV function to test if wires are energized. Transmitter has AC/DC external voltage indicators of 12V, 48V, 120V, 240V, and 480V. Kit comes with transmitter, receiver, blade and ground prongs, alligator clips, 3-Foot and 20-Foot lead adapters, AC plug leads, instructions, all required batteries, and a hard carrying case. Mfg #ET450

• The Advanced Circuit Tracer Kit Provides Reliable Tracing Of Energized Or Non-Energized Breakers, Fuses, And Wires
• Easily adjust receiver sensitivity level to detect the transmitted signal through drywall, cement block, and underground
• Versatile applications include tracing wires, conduit or pipes, or a single wire in a bundle
• Audible beep and visual indicators on receiver denotes signal strength

The Klein Tools Coax Explorer 2 verifies proper continuity of F-connector coaxial cables and maps their location. The color-coded remotes allow for up to four cables to be tested and mapped, displaying cable status via LED indicators - PASS, OPEN, or SHORT - that also identify the cable/remote location. This compact tester fits in your pocket.

• Cable tester tests coaxial cable and maps up to 4 locations
• Simple push button operation
• Easy-to-read LED panel indicates PASS, OPEN or SHORT conditions and the location of each cable
• Color-coded push-on remotes allow for up to four cables to be tested and mapped
• Test remotes and F-adapter snap into the remote holder and clip onto the tester for easy access and storage
• Includes removable, snap-on remote holder, 4 color-coded push-on remotes, F adapter and batteries
• Uses 2 replaceable AAA batteries
• Note: Does not work through cable splitters
• Carrying clip for easy transport

Klein Tools ET40 is an Electronic AC/DC Voltage Tester. It features indicators for positive and negative DC polarity, and tests DC voltages as low as 1.5V. It tests AC voltages 12-240VAC. Excellent for checking, verifying or troubleshooting common residential electrical wiring in electrical outlets, light fixtures, doorbells and more. It operates on 2 x AAA batteries.

• Voltage Tester for AC voltages from 12V to 240V AC at four useful levels aligned with commonly used residential voltages
• Tests DC voltages from 1.5V to greater than 17 to 24V at four useful levels aligned with commonly used DC voltages
• Bright LEDs illuminate to indicate the type and level of voltage detected
• Built to withstand a 9.8-Foot (3 m) drop
• Indicates polarity when measuring DC voltages
• Powers off automatically after approximately 2 minutes of non-use to conserve battery life
• CATIII 250V, Class 2, Double insulation
• Ingress protection IP41 dust and water resistant
• Built-in test lead holders on sides of tester
• Low battery indicator with easily accessible battery compartment
• Pocket clip secures tester to pocket for reliable everyday carrying
• Uses 2 x AAA batteries (included)

This simple, compact data cable tester for RJ11, RJ12 and RJ45 terminated voice and data cables for Miswires, Open-Faults, Short-Faults and Shield. Instant LED responses indicate cable status. The test remote stores securely in the tester body. The Auto Power-Off feature shuts the tester down automatically to save the 9V battery (included).

• Cable tester with single button testing of RJ11, RJ12 and RJ45 terminated voice and data cables
• Tests CAT3, CAT5e and CAT6/6A cables
• Fast LED responses indicate cable status (Pass, Miswire, Open-Fault, Short-Fault, and Shield)
• Test remote stores securely in tester body
• Compact tester easily fits in your pocket
• Auto Power-off feature to conserve battery life (9V included)
• Low battery indicator
• Replacement remote (VDV999-150) available (sold separately)

Klein Orange Digital AC/DC Voltage/Continuity Tester. Automatically Selects Voltage Or Continuity; Automatically Powers On When Any Measurement Is Attempted. Backlit Lcd Display. Cat Iv 600v Modern Solid-State Design For Safety. Tests Gfci Protected Circuits. Uses Standard Replaceable Multimeter Test Leads. Features Built-In Test Lead Holders On Back Of Meter. Integrated Flashlight. 9.8 Ft. (3 M) Drop Protection. Ip53 Dust And Water Resistant. Mfg #ET250

• Automatically Selects Voltage Or Continuity; Automatically Powers On When Any Measurement Is Attempted
• Backlit Lcd Display
• Cat Iv 600v Modern Solid-State Design For Safety
• Tests Gfci Protected Circuits

The Klein Tools ET900 is a USB digital meter for common standard USB-A (Type A) ports including Qualcomm Quick Charge ports. It accurately and reliably measures and displays the USB port voltage, current, capacity, energy, and resistance simultaneously. It can function with any USB-A port that has the ability to deliver power. It requires NO batteries as it draws power from the power source to function.

• 3 to 20V DC; Current: 0.05 to 3A
• Continuously monitor up to 1000 hours of voltage, current, capacity/charge delivered, energy, and resistance (calculated)
• Tests most common standard USB-A ports, including Qualcomm Quick Charge ports
• Store and recall up to 10 readings
• Voltage and current overload detection
• Hi-resolution LCD for clear visibility in environments with low ambient lighting
• Durable cable to allow easy access to hard-to-reach ports
• Rugged, pocket-sized, and light weight Klein industrial design stands up to jobsite demands
• Built to withstand a 6.6-Foot (2m) drop
• No batteries needed; powered by the USB port being tested