Shop Tools for Testing Circuits

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$99.98
Klein Tools VDV501-851 Cable Tester Kit With Scout Pro 3 For Ethernet / Data, Coax / Video And Phone Cables, 5 Locator Remotes
Amazon.com
2K+
Free shipping
$99.98
Klein Tools VDV501-851 Cable Tester Kit With Scout Pro 3 For Ethernet / Data, Coax / Video And Phone Cables, 5 Locator Remotes
Amazon.com
2K+
$41.99
NOYAFA NF-827 Circuit Breaker Finder Tool With 3 Accessories &GFCI Outlet Tester, 90-120V AC Circuit Breaker Finder, Quickly Identify NCV Circuit
Amazon.com
125
Free shipping
$41.99
NOYAFA NF-827 Circuit Breaker Finder Tool With 3 Accessories &GFCI Outlet Tester, 90-120V AC Circuit Breaker Finder, Quickly Identify NCV Circuit
Amazon.com
125
$49.97
Klein Et310 Circuit Breaker Finder/Tester
New Feedonomics Feed - ARC 8/12/2025
20K+
$49.97
Klein Et310 Circuit Breaker Finder/Tester
New Feedonomics Feed - ARC 8/12/2025
20K+
$27.99
Lunarlipes Tone Generator Kit, Wire Tracer Circuit Tester, Tone Tracing Probe Kit, 200EP High Accuracy Cable Tester, Line Finder Toner Inductive
Amazon.com
200
$27.99
Lunarlipes Tone Generator Kit, Wire Tracer Circuit Tester, Tone Tracing Probe Kit, 200EP High Accuracy Cable Tester, Line Finder Toner Inductive
Amazon.com
200
$89.99
2025 Autel Powerscan PS100 Power Circuit Probe Kit, 12V 24V Automotive Electrical Wire Tracer Circuit Relay Tester, Open Breaker Short Find Tool, Read
Amazon.com
26
Free shipping
$89.99
2025 Autel Powerscan PS100 Power Circuit Probe Kit, 12V 24V Automotive Electrical Wire Tracer Circuit Relay Tester, Open Breaker Short Find Tool, Read
Amazon.com
26
$124.49
$165.99
Fluke 17B+ Digital Multimeter, For Electrical Applications, Measures AC/DC Voltage 1000V, Current Measurements To 10A, Resistance, Continuity, Diode,
Amazon.com
58
Free shipping
25% off
$124.49
$165.99
Fluke 17B+ Digital Multimeter, For Electrical Applications, Measures AC/DC Voltage 1000V, Current Measurements To 10A, Resistance, Continuity, Diode,
Amazon.com
58
$89.99
Autel Powerscan PS100 Power Circuit Probe Kit, 2025 Advanced Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Tool, Activate
Amazon.com
Free shipping
$89.99
Autel Powerscan PS100 Power Circuit Probe Kit, 2025 Advanced Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Tool, Activate
Amazon.com
Free shipping
$27.99
VDIAGTOOL V210 Wire Tracer Electrical Automotive Open & Short Finder Circuit Tester Circuit Breaker Finder Fault Probe Wire Tracker Electrical DC 6-
Amazon.com
89
$27.99
VDIAGTOOL V210 Wire Tracer Electrical Automotive Open & Short Finder Circuit Tester Circuit Breaker Finder Fault Probe Wire Tracker Electrical DC 6-
Amazon.com
89
$193.57
$216.99
Fluke TL81A Deluxe Electronic Test Lead Kit
Amazon.com
Free shipping
10% off
$193.57
$216.99
Fluke TL81A Deluxe Electronic Test Lead Kit
Amazon.com
Free shipping
$299.99
Klein Tools ET450 Advanced Underground Circuit Breaker Finder And Wire Tracer Kit For Energized And Non-Energized Breakers, Fuses, And Wires
Amazon.com
21
Free shipping
$299.99
Klein Tools ET450 Advanced Underground Circuit Breaker Finder And Wire Tracer Kit For Energized And Non-Energized Breakers, Fuses, And Wires
Amazon.com
21
$89.99
Klein Tools 80101 Circuit Breaker Finder Kit, GFCI Outlet And Receptacle Tester Kit, Multimeter, NCVT, Outlet Tester, Leads, 4-Piece
Amazon.com
824
Free shipping
$89.99
Klein Tools 80101 Circuit Breaker Finder Kit, GFCI Outlet And Receptacle Tester Kit, Multimeter, NCVT, Outlet Tester, Leads, 4-Piece
Amazon.com
824
$169.99
$199.97
Klein Tools ET600 Multimeter, Megohmmeter Insulation Tester, 4000 Ohms Resistance, 125V/250V/500V/1000V, Auto-Ranging TRMS Multimeter
Amazon.com
1K+
Free shipping
14% off
$169.99
$199.97
Klein Tools ET600 Multimeter, Megohmmeter Insulation Tester, 4000 Ohms Resistance, 125V/250V/500V/1000V, Auto-Ranging TRMS Multimeter
Amazon.com
1K+
$89.99
Autel Powerscan Automotive Circuit Tester, Power Circuit Probe Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance,
Amazon.com
235
Free shipping
$89.99
Autel Powerscan Automotive Circuit Tester, Power Circuit Probe Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance,
Amazon.com
235
$159.99
Klein Rt390 Circuit Analyzer
New Feedonomics Feed - ARC 8/12/2025
1K+
$159.99
Klein Rt390 Circuit Analyzer
New Feedonomics Feed - ARC 8/12/2025
1K+
$220.47
Fluke PRV240FS Proving Unit For T6 Electrical Tester
Amazon.com
84
Free shipping
$220.47
Fluke PRV240FS Proving Unit For T6 Electrical Tester
Amazon.com
84
$59.39
Klein Tools 80016 Circuit Breaker Finder Tool Kit With Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 And Cat. No. 69411
Amazon.com
19K+
Free shipping
$59.39
Klein Tools 80016 Circuit Breaker Finder Tool Kit With Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 And Cat. No. 69411
Amazon.com
19K+
$29.89
$32.99
UNI-T UT25A Digital AC Circuit Breaker Finder And Tracker Kit With Electrical Integrated GFCI Outlet Socket Tester, Working On AC 90-120V, Adjustable
Amazon.com
72
$29.89
$32.99
UNI-T UT25A Digital AC Circuit Breaker Finder And Tracker Kit With Electrical Integrated GFCI Outlet Socket Tester, Working On AC 90-120V, Adjustable
Amazon.com
72
$19.97
Klein Ncvt1p Non-Contact Voltage Tester Pen, 50 To 1000V Ac
New Feedonomics Feed - ARC 8/12/2025
1K+
$19.97
Klein Ncvt1p Non-Contact Voltage Tester Pen, 50 To 1000V Ac
New Feedonomics Feed - ARC 8/12/2025
1K+
$69.98
Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters And Case
Amazon.com
23
Free shipping
$69.98
Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters And Case
Amazon.com
23
$269.38
FLUKE Electrical Tester Up To 600V | Electrical Tester Flat | FLK-T5-600
FleetPride
104
$269.38
FLUKE Electrical Tester Up To 600V | Electrical Tester Flat | FLK-T5-600
FleetPride
104
$86.73
$169.81
Klein Tools RT390 Circuit Analyzer With Large LCD, Identifies Wiring Faults, GFCI And AFCI Tester 80064 AC Circuit Breaker Kit With GFCI Digital Circuit Breaker Finder(Receptacle Tester W/Voltage Drop+ Breaker Kit)
zunlongnn
48% off
$86.73
$169.81
Klein Tools RT390 Circuit Analyzer With Large LCD, Identifies Wiring Faults, GFCI And AFCI Tester 80064 AC Circuit Breaker Kit With GFCI Digital Circuit Breaker Finder(Receptacle Tester W/Voltage Drop+ Breaker Kit)
zunlongnn
$104.95
Electrical Circuit Testing Tool
HD Truck Source
$104.95
Electrical Circuit Testing Tool
HD Truck Source
$99.00
REED R5320 Wire Tracer And Circuit Testing Kit
Globaltestsupply.com
$99.00
REED R5320 Wire Tracer And Circuit Testing Kit
Globaltestsupply.com
$98.99
LISLE 3 - 49 V Circuit Tester With LCD Display | Hd Circt Tester W/Lcd Display | LIS-28830
FleetPride
$98.99
LISLE 3 - 49 V Circuit Tester With LCD Display | Hd Circt Tester W/Lcd Display | LIS-28830
FleetPride
$62.29
$87.21
Outzone Circuit Tester YD208 12V-24V Tester Probe Kit Car Electrical System Testing With LED Flashlight For Automotive
fashionbirthfi
Free shipping
28% off
$62.29
$87.21
Outzone Circuit Tester YD208 12V-24V Tester Probe Kit Car Electrical System Testing With LED Flashlight For Automotive
fashionbirthfi
Free shipping
$222.99
Lisle Tools Master Relay And Fused Circuit Test Kit
JEGS High Performance
Free shipping
$222.99
Lisle Tools Master Relay And Fused Circuit Test Kit
JEGS High Performance
Free shipping
$49.97
Klein Tools Digital Circuit Breaker Finder With GFCI Outlet Tester ET310
WebstaurantStore
$49.97
Klein Tools Digital Circuit Breaker Finder With GFCI Outlet Tester ET310
WebstaurantStore
$210.00
TB-951+ MINI CIRCUITS - Test Equipment & PC Board Tester Supplies
Radwell.com
$210.00
TB-951+ MINI CIRCUITS - Test Equipment & PC Board Tester Supplies
Radwell.com
$56.26
$75.63
Circuit Analyzer AC100-240V RMS Circuit Analyzer Tester MASTECH MS5908A/MS5908C LCD LCD Circuit Analyzer, Voltage GFCI RCD Fault Tester (MS5908A US Plug)
jmpropiedadesuk
Free shipping
25% off
$56.26
$75.63
Circuit Analyzer AC100-240V RMS Circuit Analyzer Tester MASTECH MS5908A/MS5908C LCD LCD Circuit Analyzer, Voltage GFCI RCD Fault Tester (MS5908A US Plug)
jmpropiedadesuk
Free shipping
$56.26
$75.63
Circuit Analyzer AC100-240V RMS Circuit Analyzer Tester MASTECH MS5908A/MS5908C LCD Circuit Analyzer, Voltage GFCI RCD Fault Tester (MS5908A US Plug)
jmpropiedadesuk
Free shipping
25% off
$56.26
$75.63
Circuit Analyzer AC100-240V RMS Circuit Analyzer Tester MASTECH MS5908A/MS5908C LCD Circuit Analyzer, Voltage GFCI RCD Fault Tester (MS5908A US Plug)
jmpropiedadesuk
Free shipping
$18.98
ATD Tools 5624 | Heavy-Duty Circuit Testers | Auto Tool World
AutoToolWorld.com
$18.98
ATD Tools 5624 | Heavy-Duty Circuit Testers | Auto Tool World
AutoToolWorld.com
$75.33
12-Piece P60 6V-24-Volt Power Circuit Probe Kit Automotive Voltage Tester Short Circuit Finder AC DC Outlet Test
Home Depot
Free shipping
$75.33
12-Piece P60 6V-24-Volt Power Circuit Probe Kit Automotive Voltage Tester Short Circuit Finder AC DC Outlet Test
Home Depot
Free shipping
$86.51
Klein Tools Circuit Continuity & Voltage Testers Tester Type: Receptacle Tester With GFCI Display Type: LED Power Supply: AAA Battery RT310
DkHardware.com
$86.51
Klein Tools Circuit Continuity & Voltage Testers Tester Type: Receptacle Tester With GFCI Display Type: LED Power Supply: AAA Battery RT310
DkHardware.com
$159.99
Klein RT390 Circuit Analyzer
Toolup.com
$159.99
Klein RT390 Circuit Analyzer
Toolup.com
$16.40
ATD Tools 5513 | Heavy-Duty Circuit Testers | Auto Tool World
AutoToolWorld.com
$16.40
ATD Tools 5513 | Heavy-Duty Circuit Testers | Auto Tool World
AutoToolWorld.com
$209.99
ATD Tools Relay Circuit Tester
Auto Body Toolmart
30-day returns (most items)
$209.99
ATD Tools Relay Circuit Tester
Auto Body Toolmart
30-day returns
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    Shop Tools for Testing Circuits

    Sponsored
    About our ads
    $99.98
    Klein Tools VDV501-851 Cable Tester Kit With Scout Pro 3 For Ethernet / Data, Coax / Video And Phone Cables, 5 Locator Remotes
    Amazon.com
    2K+
    Free shipping
    $99.98
    Klein Tools VDV501-851 Cable Tester Kit With Scout Pro 3 For Ethernet / Data, Coax / Video And Phone Cables, 5 Locator Remotes
    Amazon.com
    2K+
    $41.99
    NOYAFA NF-827 Circuit Breaker Finder Tool With 3 Accessories &GFCI Outlet Tester, 90-120V AC Circuit Breaker Finder, Quickly Identify NCV Circuit
    Amazon.com
    125
    Free shipping
    $41.99
    NOYAFA NF-827 Circuit Breaker Finder Tool With 3 Accessories &GFCI Outlet Tester, 90-120V AC Circuit Breaker Finder, Quickly Identify NCV Circuit
    Amazon.com
    125
    $49.97
    Klein Et310 Circuit Breaker Finder/Tester
    New Feedonomics Feed - ARC 8/12/2025
    20K+
    $49.97
    Klein Et310 Circuit Breaker Finder/Tester
    New Feedonomics Feed - ARC 8/12/2025
    20K+
    $27.99
    Lunarlipes Tone Generator Kit, Wire Tracer Circuit Tester, Tone Tracing Probe Kit, 200EP High Accuracy Cable Tester, Line Finder Toner Inductive
    Amazon.com
    200
    $27.99
    Lunarlipes Tone Generator Kit, Wire Tracer Circuit Tester, Tone Tracing Probe Kit, 200EP High Accuracy Cable Tester, Line Finder Toner Inductive
    Amazon.com
    200
    $89.99
    2025 Autel Powerscan PS100 Power Circuit Probe Kit, 12V 24V Automotive Electrical Wire Tracer Circuit Relay Tester, Open Breaker Short Find Tool, Read
    Amazon.com
    26
    Free shipping
    $89.99
    2025 Autel Powerscan PS100 Power Circuit Probe Kit, 12V 24V Automotive Electrical Wire Tracer Circuit Relay Tester, Open Breaker Short Find Tool, Read
    Amazon.com
    26
    $124.49
    $165.99
    Fluke 17B+ Digital Multimeter, For Electrical Applications, Measures AC/DC Voltage 1000V, Current Measurements To 10A, Resistance, Continuity, Diode,
    Amazon.com
    58
    Free shipping
    25% off
    $124.49
    $165.99
    Fluke 17B+ Digital Multimeter, For Electrical Applications, Measures AC/DC Voltage 1000V, Current Measurements To 10A, Resistance, Continuity, Diode,
    Amazon.com
    58
    $89.99
    Autel Powerscan PS100 Power Circuit Probe Kit, 2025 Advanced Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Tool, Activate
    Amazon.com
    Free shipping
    $89.99
    Autel Powerscan PS100 Power Circuit Probe Kit, 2025 Advanced Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Tool, Activate
    Amazon.com
    Free shipping
    $27.99
    VDIAGTOOL V210 Wire Tracer Electrical Automotive Open & Short Finder Circuit Tester Circuit Breaker Finder Fault Probe Wire Tracker Electrical DC 6-
    Amazon.com
    89
    $27.99
    VDIAGTOOL V210 Wire Tracer Electrical Automotive Open & Short Finder Circuit Tester Circuit Breaker Finder Fault Probe Wire Tracker Electrical DC 6-
    Amazon.com
    89
    $193.57
    $216.99
    Fluke TL81A Deluxe Electronic Test Lead Kit
    Amazon.com
    Free shipping
    10% off
    $193.57
    $216.99
    Fluke TL81A Deluxe Electronic Test Lead Kit
    Amazon.com
    Free shipping
    $299.99
    Klein Tools ET450 Advanced Underground Circuit Breaker Finder And Wire Tracer Kit For Energized And Non-Energized Breakers, Fuses, And Wires
    Amazon.com
    21
    Free shipping
    $299.99
    Klein Tools ET450 Advanced Underground Circuit Breaker Finder And Wire Tracer Kit For Energized And Non-Energized Breakers, Fuses, And Wires
    Amazon.com
    21
    $89.99
    Klein Tools 80101 Circuit Breaker Finder Kit, GFCI Outlet And Receptacle Tester Kit, Multimeter, NCVT, Outlet Tester, Leads, 4-Piece
    Amazon.com
    824
    Free shipping
    $89.99
    Klein Tools 80101 Circuit Breaker Finder Kit, GFCI Outlet And Receptacle Tester Kit, Multimeter, NCVT, Outlet Tester, Leads, 4-Piece
    Amazon.com
    824
    $169.99
    $199.97
    Klein Tools ET600 Multimeter, Megohmmeter Insulation Tester, 4000 Ohms Resistance, 125V/250V/500V/1000V, Auto-Ranging TRMS Multimeter
    Amazon.com
    1K+
    Free shipping
    14% off
    $169.99
    $199.97
    Klein Tools ET600 Multimeter, Megohmmeter Insulation Tester, 4000 Ohms Resistance, 125V/250V/500V/1000V, Auto-Ranging TRMS Multimeter
    Amazon.com
    1K+
    $89.99
    Autel Powerscan Automotive Circuit Tester, Power Circuit Probe Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance,
    Amazon.com
    235
    Free shipping
    $89.99
    Autel Powerscan Automotive Circuit Tester, Power Circuit Probe Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance,
    Amazon.com
    235
    $159.99
    Klein Rt390 Circuit Analyzer
    New Feedonomics Feed - ARC 8/12/2025
    1K+
    $159.99
    Klein Rt390 Circuit Analyzer
    New Feedonomics Feed - ARC 8/12/2025
    1K+
    $220.47
    Fluke PRV240FS Proving Unit For T6 Electrical Tester
    Amazon.com
    84
    Free shipping
    $220.47
    Fluke PRV240FS Proving Unit For T6 Electrical Tester
    Amazon.com
    84
    $59.39
    Klein Tools 80016 Circuit Breaker Finder Tool Kit With Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 And Cat. No. 69411
    Amazon.com
    19K+
    Free shipping
    $59.39
    Klein Tools 80016 Circuit Breaker Finder Tool Kit With Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 And Cat. No. 69411
    Amazon.com
    19K+
    $29.89
    $32.99
    UNI-T UT25A Digital AC Circuit Breaker Finder And Tracker Kit With Electrical Integrated GFCI Outlet Socket Tester, Working On AC 90-120V, Adjustable
    Amazon.com
    72
    $29.89
    $32.99
    UNI-T UT25A Digital AC Circuit Breaker Finder And Tracker Kit With Electrical Integrated GFCI Outlet Socket Tester, Working On AC 90-120V, Adjustable
    Amazon.com
    72
    $19.97
    Klein Ncvt1p Non-Contact Voltage Tester Pen, 50 To 1000V Ac
    New Feedonomics Feed - ARC 8/12/2025
    1K+
    $19.97
    Klein Ncvt1p Non-Contact Voltage Tester Pen, 50 To 1000V Ac
    New Feedonomics Feed - ARC 8/12/2025
    1K+