Top Open Tester

Network Cable Tester - NOYAFA Cable Wire Fault Finder for RJ45 Cat5, Cat6, 5e, 6e Measure Length, Locate the Breakage Point, Check Wiring Error with 8 Far-end Passive Test Jacks

  • ★【 CONTINUITY TEST & WIRING DIAGRAM TEST FUNCTION 】 This network cable tester can do the continuity test, which can help you check whether your cable is working normally. The cat6 cable tester is able to determine the distance of open circuit and short circuit. Permits you to locate the wiring error in 5E/7E twisted cord network, coaxial cable and telephone line..
  • ★【 LONG BATTERY LIFE & 8 FAR-ENDS 】 The network cable tester is a portable unit with long battery life (wait-case or standby mode for over 50 hours). The device is equipped with 8 far-ends, and each one has a number to help you clearly locate each line and save your time..
  • ★【 MEASURE CABLE LENGTH & ABNORMAL PAIR AND LENGTH FOR RJ45 】When you use the network cable tester rj45 to measure the cable length, the normal pair & length will be shown in the screen. If there is an open circuit, it will show the specific length range in which this situation occurs. Note that the far end cannot be connected when using pair and length measurement..
  • ★【 CALIBRATION FUNCTION & EASY TO CARRY 】 The cat6 cable tester can do self-checking function and automatically compensates any change in battery capacity or ambient temperature. Dynamically calibrates cable length and make length measure....
Check Stock

NEW Advanced With voltage display GFCI Outlet Tester 48-250V Power Socket Automatic Electric Circuit Polarity Voltage Detector Wall Plug Breaker Finder TA106B

  • Electric Socket Tester – Advanced socket tester for rapidly detecting whether the socket’s wire connection is correct or not.Design with RCD/GFCI Test Button – Power outlet socket for correct wiring and RCD/GFCI trip function. It can test the protection system to ensure the household electrical safety. Perfect for protect your security against the risk of electric shock..
  • Bright Led Display – Light patterns are well labeled on the back of the device itself. The Red LED indicators can be light up clearly even in strong sunlight. The tester incorporates a built-in light so it can also be used in the dark, making you read it fast.
  • 7 LED Light Patterns – With 7 easy to read indicators to indicate the state of the socket, easy to judge: Correct, Open Ground, Open Neutral, Live/Neutral Reverse,Live/Ground Reverse, Open Live & Live Neutral Reverse..
  • Wide Application – Widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in school, laboratory, factory and other social field. Home improvement acceptance and safety inspection，It saves you lots of time in testing problems with sockets..
  • Portable Design – Compact size, light weight and convenient to use. W....
Check Stock

Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set & RT250 GFCI Receptacle Tester with LCD Display, for Standard 3-Wire 120V Electrical Outlets

  • Product 1: Circuit Breaker Tool Kit can help quickly and accurately locate the correct circuit breaker in a panel corresponding to the circuit to which an electrical outlet or fixture is connected.
  • Product 1: Digital Circuit Breaker Finder with GFCI Outlet Tester (Cat. No. ET310) receiver delivers clear visual and audible indications when the correct breaker has been located.
  • Product 1: Operates on 90-120V AC circuits.
  • Product 1: Transmitter incorporates a GFCI outlet tester to inspect the wiring condition at the electrical outlet and test GFCI devices.
  • Product 2: LARGE CLEAR LCD READOUT on receptacle tester to instantly view results without the need to look at a chart to understand results.
  • Product 2: TEST GFCI TRIP TIME IN SECONDS to find out if the trip breaker is functioning.
  • Product 2: DETECT WIRING FAULTS of open ground, open neutral, open hot, dual open (neutral and ground), reversed hot/ground, and reversed hot/neutral.
  • Product 2: AUTO-HOLD FUNCTION is convenient for hard-to-reach outlets.
Check Stock

Klein Tools RT310 Outlet Tester, AFCI and GFCI Receptacle Tester for North American AC Electrical Outlets

  • GFCI Tester detects the most common wiring faults in standard, AFCI, and GFCI electrical outlets.
  • Test AFCI devices by simulating arc fault conditions.
  • Test GFCI devices by simulating ground fault conditions.
  • Capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology).
  • Tester delivers clear visual indication of the wiring condition at the electrical outlet.
Check Stock

Klein Tools RT250 GFCI Receptacle Tester with LCD Display, for Standard 3-Wire 120V Electrical Outlets

  • LARGE CLEAR LCD READOUT on receptacle tester to instantly view results without the need to look at a chart to understand results.
  • TEST GFCI TRIP TIME IN SECONDS to find out if the trip breaker is functioning.
  • DETECT WIRING FAULTS of open ground, open neutral, open hot, dual open (neutral and ground), reversed hot/ground, and reversed hot/neutral.
  • AUTO-HOLD FUNCTION is convenient for hard-to-reach outlets.
  • SAFE AND DURABLE TESTER for inspections on North American 120V outlets.
  • BRIGHT LED LIGHTS illuminate green and red for visual indicators.
  • TRUSTED SAFE with a safety rating of CAT II 135V.
Check Stock

Klein Tools NCVT-4IR Non-Contact Volt Tester, 12 - 1000V AC Pen with IR Thermometer & RT250 GFCI Receptacle Tester with LCD Display, for Standard 3-Wire 120V Electrical Outlets

  • Product 1: Voltage Tester designed specifically for HVAC applications.
  • Product 1: 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.
  • Product 1: Detects AC voltage from 12 to 1000V with visual and audible indicators.
  • Product 1: 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).
  • Product 2: LARGE CLEAR LCD READOUT on receptacle tester to instantly view results without the need to look at a chart to understand results.
  • Product 2: TEST GFCI TRIP TIME IN SECONDS to find out if the trip breaker is functioning.
  • Product 2: DETECT WIRING FAULTS of open ground, open neutral, open hot, dual open (neutral and ground), reversed hot/ground, and reversed hot/neutral.
  • Product 2: AUTO-HOLD FUNCTION is convenient for hard-to-reach outlets.
Check Stock

Diode Check

  • 【Easy-to-use multi-function probe tester】The main functions of this power circuit probe tester include voltage and polarity test, continuity test, signal circuit test, current test, circuit breaker protection, relay test, injector test and cleaning, component activation and testing, poor ground testing, tracking and locating shorts, etc. It beeps to indicate the result while testing and is the most versatile and practical dedicated circuit repair test tool its users have ever had..
  • 【Best Electrical Tester】This electrical tester can supply power to electrical components, with reverse connection protection circuit, it is an advanced test tool for positive and negative line judgment. It shortens the diagnostic time of all 6 to 40 volt vehicle electrical systems, and is suitable for DC 6-40v cars, motorcycles, trucks, buses, construction vehicles, ships, tractors, mining vehicles and other vehicles that use DC circuits..
  • 【Quick Self Test & Relay Test & Circuit Breaker Protection】GODIAG GT101 circuit tester has quick self test function, which can ensure the tester is in good condition before use. The GT101 Probe Tester Kit can quickly detect whether t....
Check Stock

Haofy Digital Alcohol Tester Breathalyzer, Breath Alcohol Tester LCD 3 Color Display USB Charging Blowing Contactless Testing Alcohol Breathalyze(Pink)

  • 【Contactless Testing】The breath alcohol tester is made of ABS material, which is wear resistant and durable, and has a long service life. The portable alcohol tester is a non contact type of blow test, no need for a mouthpiece test, which is healthier and safer.
  • 【USB Charging】The rechargeable alcohol tester has an LCD three color display, which can respond quickly, and has a USB charging function.The breath tester for alcohol is automatically turned off to save power when there is no operation..
  • 【Small and Portable】The alcohol tester is compact and easy to carry, allowing you to test anytime, anywhere.
  • 【Semiconductor Sensor】The alcohol breathalyzer uses semiconductor sensors to give you accurate data and can be used with confidence.
  • 【Easy To Use】The digital alcohol breath tester is extremely easy to use, your alcohol content can be determined within a few seconds. It has no dust design, open the dust-proof cover and blow in the alcohol test..
Check Stock

3-48V Digital LCD Display Circuit Tester with 140 Inch Extended Spring Wire Car Truck Vehicles Low Voltage Tester with Testing Stainless Probe and Ground Clamp

  • Digital LED automotive circuit tester widely used in checking various vehicles electrical circuits, such as automotive....
  • 3-48V digital LCD display circuit tester, multifunctional household test pen, you can use it to test circuit（locating shorts grounds and open....
  • 3-48V circuit tester made of high quality electronic materials, LED reading display is clear and accurate, 140 inch extension PU spring wire with....
  • Heavy duty 3-48V digital LCD circuit tester, low voltage circuit tester, 12 volt digital test light, 12 volt test light, 12 volt test lights, 12 volt....
  • 100% satisfactory service, if you have any questions, please feel free to contact us by email!We will solve it for you in the first time..
Check Stock

Klein Tools VDV526-100 Network LAN Cable Tester, VDV Tester, LAN Explorer with Remote

  • Cable tester with single button testing of RJ11, RJ12 and RJ45 terminated voice and data 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).
Check Stock

ANENG Clamp Meter Multimeter Tester Auto Ranging TRMS 6000 Counts AC/DC Current Voltage Ohm Volt Amp Meter Meansures NCV Continuity Diode Resistance Capacitance Null/Fire Wire Electrical Tools

  • 【Great Helper】True Rms 6000 Counts Non contact voltage tester is a perfect troubleshooting amp meter tools, you can accurately troubleshoot vehicle or internal electrical problems in a fraction of the time and get the job done more efficiently.The continuity tester made troubleshooting become more easy. Would make a great gift for any DIY’er and the smart mode makes it simple for older folks!.
  • 【Accuracy & Multi-function】Aneng multimeter can measure ac/dc current, ac/dc voltage, live/zero wire,serve as continuity, resistance, and capacitance tester. It can also measure non-contact voltage detection and buzzer alarm,temperature, frequency, and duty cycle with less error & more accuracy. Backlight LCD screen and clamp head lighting with one hand operation trigger, it’s easy to use even if the ambient light is too dark..
  • 【Double Open Clamp &】The maximum wire diameter that the ANENG Clamp Multimeter can measure is 1.24 inches without interrupting the circuit. Double open jaws meet your operating habits..
  • 【Power Saving & Portable】The voltmeter will automatically enters sleep mode after 15 minutes of inactivity for energy conservation,where it can handle the demands of a long workday,The design for the tester is small enough to fit in ....
Check Stock

Klein Tools 69149 Electrical Test Kit with Multimeter, Non-Contact Voltage Tester and Receptacle Outlet Tester

  • The MM300 multimeter measures AC/DC voltage, DC current and resistance and has a safety rating of CAT III 600V, Class 2, Double insulation.
  • The NCVT-1 has a bright green LED to indicate the tester is working.
  • it changes to red and warning tones sound when voltage is detected.
  • NCVT-1 has a digitally-controlled ON/OFF power button and auto power-off feature to conserve and extend battery life.
  • Receptacle tester detects wiring configurations and indicates correct wiring, and identifies common wiring faults.
  • Identifies open ground, open hot, open neutral, hot/ground reversed.
  • it does not indicate quality of ground, multiple hot wires, or a combination of defects.
Check Stock