Best circuit testers Deals Online in the US
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Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters and CaseFree ShippingKlein Tools 
Klein Tools ET310 AC Circuit Breaker Finder, Electric and Voltage Tester with Integrated GFCI Outlet TesterFree ShippingKlein Tools
JDiag P200 Smart Hook Power Probe Car Circuit Analyzer 9V-30V Injector Tester US- Best Value
16% OffFOCEMTA Circuit Breaker Finder & GFCI Outlet Tester with Digital LCD Display, 90-135V Electrical Circuit Tracer Tool for Electricians/DIY – Lightweight (Includes Batteries & Carrying Case)Free Shippingfocemta 
12-24V Auto Circuit Tester Power Circuit Probe Electrical Short Breaker Finder
Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411Free ShippingKlein Tools
Klein Tools 80025 Outlet Tester Kit with GFCI Tester and Non-Contact Voltage Test Pen, 2-PieceFree ShippingKlein Tools-
Autel PowerScan PS100 Circuit Tester Electrical Diagnostic Power Probe 12V/24V
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20% OffKlein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit for Energized and Non-Energized Breakers, Fuses, and WiresFree ShippingKlein Tools
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33% Off3.5-36V Digital Automotive Car Power Circuit Electrical Tester Probe Test Light
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WINAMOO Automotive Test Light with 3-48V LED Digital Voltage Display, Auto Circuit Tester with Voltmeter & Dual Color Polarity Indicate, Electric Test Pen w/Stainless Probe for Car/Truck/SUV CheckerFree ShippingWINAMOO
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12% OffKlein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical ReceptaclesFree ShippingKlein Tools
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17% OffAutomotive Short and Open Finder Circuit Tester DC 6-42V Car Wire Tracker Tool
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11% OffKAIWEETS Voltage Tester/Non-Contact Voltage Tester with Signal Percentage, Dual Range AC 12V/70V-1000V, Live/Null Wire Tester, Electrical Tester with LCD Display, Buzzer Alarm, Wire Breakpoint FinderFree ShippingKAIWEETS
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Digital Voltage Circuit Tester Automotive Test Probe Light Car Truck 6-24V
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Klein Tools NCVT1P Voltage Tester, Non-Contact Low Voltage Tester Pen, 50V to 1000V AC, Audible and Flashing LED Alarms, Pocket ClipFree ShippingKlein Tools
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Digital Automotive Car Power Probe Circuit Electrical Tester Test Device System
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Klein Tools 80101 Circuit Breaker Finder Kit, GFCI Outlet and Receptacle Tester Kit, Multimeter, NCVT, Outlet Tester, Leads, 6-PieceFree ShippingKlein Tools
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23% Off6-24V Digital Electric Voltage Circuit Tester Automotive Test Light Car Truck
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Gardner Bender GFI-3501 Ground Fault Receptacle Tester & Circuit Analyzer, 110-125V AC, for GFCI / Standard / Extension Cords & More, 7 Visual LED Tests , RedFree ShippingGardner Bender
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Digital Electric Voltage Circuit Tester Automotive Test Light Car Truck 6-24V US
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Automotive Test Light with 3-48V LED Digital Display, Circuit Tester Automotive with Voltmeter and Dual Color Polarity Indicator Light, Electrical Voltage Test Pen with Sharp Stainless ProbeFree ShippingFEAOXYO
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9X 1-99V Digital Automotive Car Power Circuit Electrical Tester Probe Test Light
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Klein Tools 80064 AC Circuit Breaker Kit with GFCI Digital Circuit Breaker Finder, Non-Contact Voltage Tester Pen and Zipper Bag, 3-PieceFree ShippingKlein Tools
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3.5-36V Digital Automotive Car Power Circuit Electrical Tester Probe Test Light
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Fluke BK120 SmartTrace Breaker Finder and Socket TesterFree ShippingFluke
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3 ~ 48V Automotive Test Light Digital LED Circuit Tester Car Truck Voltage
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11% OffMXCOIRTP Voltage Tester, Non-Contact Voltage Detector, Electrical Tester, 3 Ranges AC 12V/48V/70V-1000V, Live/Null Wire Tester with Buzzer Alarm and Flashlight, Wire Breakpoint Finder - OrangeFree ShippingMXCOIRTP
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3V~ 48V Digital LED Circuit Tester Electric Tester Pen Wire Universal
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Klein Tools RT210 Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring ProblemsFree ShippingKlein Tools
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Autel PowerScan PS100 Circuit Tester Electrical Diagnostic Power Probe 12V/24V
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VDIAGTOOL V210 Wire Tracer Automotive Electrical Open & Short Finder Circuit Tester Wire Breaker Finder Fault Probe Cable Tracker Electrical DC 6-42VFree ShippingVDIAGTOOL
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Automotive Car Digital Power Probe Circuit Electrical Tester Test Lead Device
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Sperry Instruments GFI6302 GFCI Outlet / Receptacle Tester, Standard 120V AC Outlets, 7 Visual Indication / Wiring Legend, Home & Professional Use, Yellow & BlackFree ShippingSPERRY
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AstroAI Digital Multimeter Tester 2000 Counts with DC AC Voltmeter and Ohm Volt Amp Meter; Measures Voltage, Current, Resistance, Continuity and Diode, BlueFree ShippingAstroAI
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27% OffKlein Tools RT390 Circuit Analyzer with Large LCD, Identifies Wiring Faults, GFCI and AFCI Tester, Voltage Drop, Displays Trip TimeFree ShippingKlein Tools
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Test Light Automotive, Circuit Tester 6V-12V-24V Car Electrical Test Pen with Continuity Voltage Electrical Fuse Tester for Sedan, SUV, RV and TruckFree ShippingVLOUQIC
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11% OffKlein Tools 69149P Electrical Test Kit with Digital Multimeter, Non-Contact Voltage Tester and Electrical Outlet Tester, Leads and BatteriesFree ShippingKlein Tools
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KAIWEETS Circuit Breaker Finder with LCD Display, NCV Tset & Flashlight, Electric Tester and Voltage Tester with Integrated GFCI Outlet Tester, Includes Carrying Case and Accessories - KT301PFree ShippingKAIWEETS
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Autel PowerScan Automotive Circuit Tester, Power Circuit Probe Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance, Duty Cycle, & 20FT Extension Cord, for 99% CarsFree ShippingAutel
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28% OffPremium LED Bulb Automotive Circuit Tester, 6-24V Test Light with 135 Inch PU Extended Spring Wire, Sharp Hard Steel Probe Vehicle Circuits Low DC Voltage Light TesterFree ShippingWINAMOO
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VDIAGTOOL V200 Pro Automotive Power Circuit Probe Tester Breaker Finder Tool, 12/24V Electrical Open Short Circuit Finder, Wire Tracer, AC/DC Trailer Relay Fuse Test for 99% CarsFree ShippingVDIAGTOOL
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NSi Industries TES-111 Twin Probe Voltage Tester, 80-250 VAC,NeonFree ShippingNSI
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10% OffNOYAFA NF-827 Circuit Breaker Finder Tool with 3 Accessories &GFCI Outlet Tester, 90-120V AC Circuit Breaker Finder, Quickly Identify NCV Circuit Tester with Storage Case, Sensitivity AdjustmentFree ShippingNOYAFA
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Auroland Non-Contact Voltage Tester with 9 Gear Adjustable Sensitivity Voltage Detector AC Circuit Tester Tool LCD Display LED Flashlight Buzzer Alarm Range12V-1000V & Live/Null Wire Judgment AC1Free ShippingAuroland
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15% OffVDIAGTOOL V200 PRO Upgrade Kit Automotive Power Circuit Probe Tester with 30PCS Back Probe Kit, 12/24V Electrical Short and Open Circuit Finder AC/DC Voltage Test Activating Component 40Ft CableFree ShippingVDIAGTOOL
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30% OffHeavy Duty 3-65V Backlit Digital LCD Circuit Tester, Test Light with 140 Inch Extended Spring Wire, Car Truck Low Voltage & Light Tester with Stainless ProbeFree ShippingJASTIND
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Klein Tools RT110 Outlet Tester, AC Electrical Receptacle Tester for North American OutletsFree ShippingKlein Tools
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Anyongora Test Light Automotive Circuit Tester with 3-48V LED Digital Voltage Display, Dual Polarity Indicator, Stainless Probe for Car, Truck, and Home Appliance RepairFree ShippingAnyongora
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12 Volt Test Light Automotive, Power Circuit Probe Kit, 6V - 24V Car Fuse Tester, Voltage Tester 0.3v-70v, AC DC Outlet Tester, Automotive Short Circuit Finder, P60Free ShippingTopDiag
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13% OffAstroAI Digital Multimeter and Analyzer TRMS 6000 Counts Volt Meter Ohmmeter Auto-Ranging Tester; Accurately Measures Voltage Current Resistance Diodes Continuity Duty-Cycle Capacitance TemperatureFree ShippingAstroAI
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VENLAB Voltage Tester, Non Contact Voltage Detector, Circuit Tester Dual Range Voltage Sniffer 12V-1000V/48V-1000V, Live Wire Tester with Alarm and Flashlight, Electrical Tester with LCD DisplayFree ShippingVENLAB
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Heavy Duty 3-72V Digital LED Automotive Test Light, Circuit Tester with Polarity Indicate and Illuminating Lights, Car Truck Low DC Voltage Light Tester with Stainless Probe & 142 Inch Extended WireFree ShippingJASTIND
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14% OffFeikenee Test Light Automotive, 6-24V DC Voltage Tester, Circuit Tester with Alligator Clip and Long Steel Probe, Professional Electrical Tester Pen for Car Truck RVFree ShippingFeikenee
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20% OffAWBLIN Upgrade Power Circuit Probe Tester, LCD Digital Automotive Test Light with Voltmeter&Illumination, DC Auto Voltage Tester, Relay Fuse Component Continuity Current Resistance Frequence Test.Free ShippingAWBLIN
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Upgraded 3-72V Buzzer Automotive Test Light, Heavy Duty Digital LED Circuit Tester with Voltmeter and Dual Color Polarity Indicate Light, Bidirectional DC Voltage Tester Electric Light Test PenFree ShippingEVOULTES
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16% OffSperry Instruments STK001 Non-Contact Voltage Tester (VD6504) & GFCI Outlet / Receptacle Tester (GFI6302) Kit, Electrical AC Voltage Detector, Yellow & BlackFree ShippingSPERRY
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ITEQ Power Circuit Probe Tester, 6V-24V DC Test Light, Automotive Short Circuit Located and Component Activated, 12V Auto Electrical Tester, Polarity Identify with LED Light, Overload ProtectionFree ShippingITEQ
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NSi Industries TES-2 Voltage Tester, 120 or 240 VAC, NeonFree ShippingNSI
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21% OffKlein Tools CL120VP Electrical Voltage Test Kit with Clamp Meter, Three Testers, Test Leads, Pouch and BatteriesFree ShippingKlein Tools
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allsun em415Pro Cable Tracker Electrical, Auto Circuit Tester,Short Open Finder Wire Breaker Locator,Broken Wire Detector Tool,Cable Fault Probe, DC 6-42VFree Shippingallsun
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CMTOOL Power Circuit Probe Tester 6V-24V DC Test Light, Automotive Circuit Tester Car Short Finder, Component Activation, Polarity Identify, Overload ProtectionFree ShippingCMTOOL
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22% OffANCEL PB100 Automotive Power Circuit Probe Tester, 12 24V Electrical Short/Open Breaker Finder, AC DC Diode Resistance Relay Tester, Continuity Test Digital Multimeter/Ohmmeters, 20 + 20FT CableFree ShippingANCEL
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10% OffFluke ST120+ GFCI Socket Tester with Audible BeeperFree ShippingFluke
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Southwire Tools 40116N NCV Detector 100-600V ACFree ShippingSouthwire
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TM-510 Digital Multimeter, 4000 Counts, Smart Measurement, Auto-Ranging Voltmeter; Voltage Tester with Non-Contact Voltage Function, Measures AC/DC Voltage, Resistance, Continuity – GreenFree ShippingTESMEN
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20% OffAWBLIN Automotive Test Light 3-60V DC Digital LED Circuit Tester, Heavy Duty Light Tester with Voltmeter, Auto Bidirectional Voltage Tester Electric Test PenFree ShippingAWBLIN
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12% OffFluke 1AC II VoltAlert Non-Contact Voltage Tester, Pocket-Sized, 90-1000V AC, Audible Beeper, 2 Year Warranty, CAT IV Rating, Packaging May VaryFree ShippingFluke
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20% OffATOBLIN Test Light Automotive 3-120V DC LED Digital Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Probe Pen for Car Battery Polarity Continuity FusesFree ShippingATOBLIN
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Gardner Bender GTK-2 Safety Kit, GVD-3504 Non-Contact Voltage Tester and GFI-3501 GFI Tester, 2-PieceFree ShippingGardner Bender
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14% OffKlein Tools VDV500-820 Wire Tracer Tone Generator and Probe Kit Continuity Tester for Ethernet, Telephone, Speaker, Coax, Video, and Data Cables, RJ45, RJ11, RJ12Free ShippingKlein Tools
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INSTRODOTS Circuit Breaker Finder Tool with Accessories, 90-135V AC Digital Breaker Finder with Integrated GFCI Outlet Tester, Circuit Tracer with Buzzer Alarm & Color Display, Includes Carrying CaseFree ShippingInstrodots
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Automotive Test Light with 5-120V LED Digital Voltage Display, Circuit Tester Automotive with Voltmeter & Dual Color Polarity Indicator, Electrical Test Pen with Long Probe for Car RV Fuse CheckerFree ShippingWINAMOO
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20% OffKAIWEETS Digital Multimeter with Case, DC AC Voltmeter, Ohm Volt Amp Test Meter and Continuity Test Diode Voltage Tester for Household Outlet, Automotive Battery Test (Anti-Burn with Double Fuses)Free ShippingKAIWEETS
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Chazcool Circuit Tracer, Automotive Short Circuit Finder, Wire Tracer, Automotive Short and Open Finder Repair Tool EM415PRO DC 6-42VFree ShippingChazcool
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31% OffAstroAI Digital Clamp Meter Multimeter 2000 Counts Amp Voltage Tester Auto-ranging with AC/DC Voltage, AC Current, Resistance, Capacitance, Continuity, Live Wire Test, NCV, BlueFree ShippingAstroAI
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25% OffExtech - 1218G94EA - CB10 Circuit Breaker Finder, Locates fuses/Breakers, Tests receptacles and GFCI CircuitsFree ShippingExtech
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18% OffAutomotive Circuit Tester, Car Repair Cable Circuit Wire Tracker Tracers Analyzer Short Open Finder Tester Checker Device Detector Probe DC 6-42V Car Diagnostic ToolFree ShippingTEKCOPLUS
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Electrical Wire Tracer Circuit Tester w/Tone Generator & Probe Kit, Cable Signal Locator Tester, Test Circuit Continuity, Network Telephone Line, Automotive Circuit Identify Tools w/Clips & RJ11 PlugFree ShippingTIKSCIENCE
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33% OffCARAMAX Automotive Power Circuit Probe Tester 12-24V Trailer Light Tester 40FT Cord Resistance&Duty Cycle Digital Multimeter Short&Open Finder Reverse Protection Auto Diode Electrical Diagnostic KitFree ShippingCARAMAX
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Klein Tools NCVT1XTKIT Non-Contact Low Voltage Tester Pen and GFCI Outlet Premium Test Kit, 70V to 1000V AC, Detects Common Wiring ProblemsFree ShippingKlein Tools
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Tomorotec 2PCS Voltage Tester Screwdriver Set - Multifunctional, Magnetic Tips for Enhanced Efficiency, Dual-Use Design with Neon Light Display for AC/DC Circuit Detection, Comfortable Anti-Slip GripFree ShippingTomorotec
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Power Probe PPFUSE Fuse Monitor - Circuit Tester for Mini, Maxi & ATC Fuses – Live Current Readings Up to 80A – Replaceable Tips, and Built-in FlashlightFree ShippingPower Probe
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WINAMOO Automotive Test Light 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Light Tester, Electrical Voltage Tester with Extended Spring Wire & Probe for Car/RV/VehiclesFree ShippingWINAMOO
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MESTEK Circuit Breaker Finder, Electrical Circuit Tracer Tool Kit with Integrated GFCI Outlet Tester, Works on AC 90-135V, Circuit Tester with Buzzer Alarm & Color LCD Display, Includes Carrying CaseFree ShippingMESTEK
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19% OffTest Light Automotive, Circuit Tester 6V-12V-24V DC Car Electrical Test Pen with Alligator Clip and Long Steel Probe, Continuity Voltage Fuse Tester for Sedan, SUV, RV and TruckFree ShippingFEAOXYO
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VDIAGTOOL V500 Pro Automotive Circuit Tester, Power Circuit Probe Tester Breaker Finder Tool, 9/30V Electrical Open Short Circuit Finder, Multimeter/Oscilloscope/Relay/Injector TestFree ShippingVDIAGTOOL
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30% OffMXCOIRTP Automotive Test Light with 3-120V LED DC Digital Voltage Display, Circuit Tester Automotive with Dual Color Polarity Indicator, Electrical Test Pen with Sharp Hard Steel Probe for Car RV FuseFree ShippingMXCOIRTP
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Automotive Car Circuit Tester 6-48V DC Electrical Car Power Circuit Probe with Dual Color LED Light and Digital Display, Multi Function Test Light Fault Finder for Voltage Tester Motor CheckingFree ShippingAutokcan
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Autel PowerScan PS100 Automotive Circuit Tester 2.0, 12-24V Power Circuit Probe Tool, Auto Electrical Short Open Circuit Finder, AC/DC/Resistance/Component/Signal/Test Tool, w 20ft Extension CableFree ShippingAutel
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Automotive Car Circuit Tester 12V 24V DC Power Probe Tester with Overload Protection 12V Short Circuit Finder with Test Light for Continuity Testing Grounding CheckingFree ShippingAutokcan
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26% OffAWBLIN Automotive Test Light 3-72V DC Digital Light Tester with Voltmeter, Heavy Duty Auto Circuit Tester with LCD Backlight Display and LED Indication, Electric Test Pen with IlluminationFree ShippingAWBLIN
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Premium Digital LED Automotive Circuit Tester, DC 2.6V-32V Test Light with Portable PU Extended Spring Wire, Vehicle Circuits Low Voltage Light Tester with Sharp Stainless ProbeFree ShippingWINAMOO
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UNI-T AC Circuit Breaker Finder and Tracer Tool Kit with Electrical Integrated GFCI Outlet Tester, AC 90-120V USA Plug + Adjustable Sensitivity Beeper Indicattion+ Flashing LED Light - UT25AFree ShippingUNI-T
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12% OffFluke 2AC Alert Voltage TesterFree ShippingFluke
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27% OffKZYEE KM10 Power Circuit Probe Kit, 12V 24V Automotive Circuit Tester, Digital Multimeter, Short Finder, AC/DC Voltage Tester, Diode & Resistance, Current Probe Component Activation, 20FT+20FT CableFree ShippingKZYEE
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K Tool International XDCHT504 Dual Polarity DC Circuit Tester for Garages, Repair, Shops, and DIY, Cordless, Dual Color LED Indicators, 3-30V DC Test Range, Audible Beep, 3.6V Lithium BatteryFree ShippingK Tool International
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31% OffGardner Bender GK-5 Household Tester Electrical Test Kit, RedFree ShippingGardner Bender
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Car Circuit Tester,Multifunctional Component Activation Electrical Voltage Circuit Tester with LCD Display, 3.5-36V AC/DC Power Tester Digital Display Short Circuit Finder for Continuity TestingFree ShippingOnRetul
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Test Light Automotive, 6V-12V-24V Circuit Tester with Dual Color Polarity Indicator Light for Continuity Voltage Fuse Tester, Car Electrical Test Pen with Stainless Probe for Sedan, SUV, RV, TruckFree ShippingWINAMOO
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Chazcool Power Circuit Probe Tester, 6-24V DC Circuit Tester, Test Light Automotive Short Circuit Located, Polarity Identify with LED Light Overload ProtectionFree ShippingChazcool
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10% OffFluke 17B+ Digital Multimeter, for Electrical Applications, Measures AC/DC Voltage 100V, Current Measurements to 10A, Resistance, Continuity, Diode, Capacitance, Frequency, and Temperature TestingFree ShippingFluke
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Sound Troubleshooting Automotive Relay Tester - 4 & 5 Pin 12V Auto Diagnostic Tool, Small Handheld DIY Car Tester with Battery Clips, Relay Testing Kit, Electrical Systems ToolFree ShippingSound Troubleshooting
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15% OffPower Circuit Probe Tester, 3.5V-36V DC Multifunctional Car Electric Circuit Tester, Power Fuse & Voltage Tester with Test Light, Automotive Circuit Breake Finder Tool for Continuity TestingFree ShippingBfminitool
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AWBLIN Test Light Probe Kit, 3-72V DC LED Digital Automotive Circuit Tester with Voltmeter, 18 Pieces Multi Function Auto Fuse Voltage Tester Electric Probe Test Kit with Black Carrying CaseFree ShippingAWBLIN
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WINAMOO Test Light Automotive 5-90V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Voltage Tester, Electric Test Pen with Extended Spring Wire & Probe for Car RV Fuse CheckerFree ShippingWINAMOO
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Klein Tools RT250KIT Non-Contact Voltage Tester and GFCI Receptacle Tester with LCD and Flashlight, Voltage Electrical Test KitFree ShippingKlein Tools
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HVAC Guys - The Fuse Saver | HVAC Circuit Tester | 3 AMP & 5 AMP Fuses | Fuse Tester for Circuit Breaker - UL Rated 24V AC/DC & 125/250V ACFree ShippingLeak Saver
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Lqito Multifunctional Car Circuit Tester Component Activation Electrical Tester 6-24V/3.5-36V AC/DC Car Power Tester Digital Display Short Circuit Finder for Continuity Testing RedFree ShippingLqito
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KAIWEETS 0.8V-100V DC Smart Automotive Test Light, Buzzer Circuit Tester with Sharp Probe, Bidirectional Voltage Tester with Flashlight, Electric Test Pen for Car Battery Polarity Continuity FusesFree ShippingKAIWEETS
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Neoteck Non-Contact AC Voltage Tester Pen, AC 12-1000V, LED Flashlight, Buzzer Alarm for Live/Null Wire JudgmentFree ShippingNeoteck
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Svzadipe Automotive Power Circuit Tester with 16Ft Test Lead 6-24V DC LED Light Tester Fuse Tester Electric Light Test Pen Light Electrical Diagnostic Tool Short Circuit Finder (Red)Free ShippingSvzadipe
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19% OffKlein Tools ET45 Voltage Tester, AC / DC, and Low Voltage Electric Tester, No Batteries NeededKlein Tools
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HVAC Guys Short Finder | Short Circuit Finder for 24 VAC Circuits | Includes 12in Lead with Clips & 3ft Magnetic Jumper Testing CableFree ShippingHVAC Guys
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VDIAGTOOL V500 Automotive Power Circuit Probe Tester Kit, 9-30V Car Electric Circuit Tester, Short/Open Circuit Finder, Oscilloscope/Multimeter/Injector/Relay Tester, Component/Fuse/Trailer/AC/DC TestFree ShippingVDIAGTOOL
115 Circuit Testers deals are available from:
Amazon, eBay stores, starting from $3.97.
The biggest discount we found is 33% on CARAMAX Automotive Power Circuit Probe Tester 12-24V Trailer Light Tester 40FT Cord Resistance&Duty Cycle Digital Multimeter Short&Open Finder Reverse Protection Auto Diode Electrical Diagnostic Kit at Amazon.
The lowest price we found is $3.97 while the highest is $239.98.
Prices for the best Circuit Testers deals average at $38.03.
Last updated on October 5, 2025.
We scanned these quality online stores and more to deliver you with the best offers online available for Circuit Testers.