Shop Circuit Testers for House Wiring

Sponsored
About our ads
$44.97
$49.97
Klein Tools ET310 AC Circuit Breaker Finder, Electric And Voltage Tester With Integrated GFCI Outlet Tester
Amazon.com
24K+
Free shipping
10% off
$44.97
$49.97
Klein Tools ET310 AC Circuit Breaker Finder, Electric And Voltage Tester With Integrated GFCI Outlet Tester
Amazon.com
24K+
$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
9K+
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
9K+
$52.17
$57.99
Extech CB10 AC Circuit Breaker Finder/Receptacle Tester
Test Equipment Depot
2K+
10% off
$52.17
$57.99
Extech CB10 AC Circuit Breaker Finder/Receptacle Tester
Test Equipment Depot
2K+
$3,415.00
Megger 514242-2 Electronic DETEX Voltage Detector, 200 To 550 Kv
Test Equipment Depot
$3,415.00
Megger 514242-2 Electronic DETEX Voltage Detector, 200 To 550 Kv
Test Equipment Depot
$277.95
$293.00
BK Precision 881 In-Circuit ESR And DC Resistance Capacitor Tester
Test Equipment Depot
3
$277.95
$293.00
BK Precision 881 In-Circuit ESR And DC Resistance Capacitor Tester
Test Equipment Depot
3
$89.99
Autel Powerscan PS100 Power Circuit Probe Kit, 2026 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, 2026 Advanced Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Tool, Activate
Amazon.com
Free shipping
$13.28
Leviton Lvlok-Tst Levlok Circuit Analyzer
Gordon Electric Supply
$13.28
Leviton Lvlok-Tst Levlok Circuit Analyzer
Gordon Electric Supply
$85.00
BT-100 SCHUMACHER ELECTRIC CORP - Test Equipment & Circuit Tester Supplies
Radwell.com
$85.00
BT-100 SCHUMACHER ELECTRIC CORP - Test Equipment & Circuit Tester Supplies
Radwell.com
$474.51
Extech Megohmmeter: 200 Megaohm To 2 Gigohm, CAT III 1000V, Test Volt 1,000V DC/250V DC/500V DC, LCD Model: 380260
Grainger
3
$474.51
Extech Megohmmeter: 200 Megaohm To 2 Gigohm, CAT III 1000V, Test Volt 1,000V DC/250V DC/500V DC, LCD Model: 380260
Grainger
3
$69.98
Klein Tools Circuit Breaker Finder Kit In Orange | ET310KIT
Lowe's
273
$69.98
Klein Tools Circuit Breaker Finder Kit In Orange | ET310KIT
Lowe's
273
$330.33
423541 TYCO - Test Equipment & Circuit Tester Supplies
Radwell.com
$330.33
423541 TYCO - Test Equipment & Circuit Tester Supplies
Radwell.com
$141.22
Extech Electrical Test Kit Model: CB10-KIT
Grainger
2K+
$141.22
Extech Electrical Test Kit Model: CB10-KIT
Grainger
2K+
$21.11
$22.95
TPI 40 Voltage And Continuity Testers - Type (Voltage Testers): Contact, Style (Voltage Testers): Hand Held, Voltage Tested: AC
TEquipment
$21.11
$22.95
TPI 40 Voltage And Continuity Testers - Type (Voltage Testers): Contact, Style (Voltage Testers): Hand Held, Voltage Tested: AC
TEquipment
$317.33
Extech Receptacle Tester With GFCI: Displays Peak Line Volt And Freq, GFCI & AC Circuit Analyzers Model: CT70
Grainger
2K+
$317.33
Extech Receptacle Tester With GFCI: Displays Peak Line Volt And Freq, GFCI & AC Circuit Analyzers Model: CT70
Grainger
2K+
$476.00
T130K4 NSI INDUSTRIES - Test Equipment & Circuit Tester Supplies
Radwell.com
$476.00
T130K4 NSI INDUSTRIES - Test Equipment & Circuit Tester Supplies
Radwell.com
$59.65
$68.06
Ideal 61-051 Circuit Tester
TEquipment
14
12% off
$59.65
$68.06
Ideal 61-051 Circuit Tester
TEquipment
14
$8.99
3-Wire Receptacle Tester
Home Depot
32
Free shipping
$8.99
3-Wire Receptacle Tester
Home Depot
32
$7.31
Receptacle Tester For Standard Outlets Tests NEMA 5-15P Sockets For Correct Wiring
CableWholesale
$7.31
Receptacle Tester For Standard Outlets Tests NEMA 5-15P Sockets For Correct Wiring
CableWholesale
$44.75
$60.41
Klein Tools NCVT1P Voltage Tester, Non-Contact Voltage Detector Pen, 50V To 1000V AC, Audible And Flashing LED Alarms, Pocket Clip Pack Of 2
vyroqi.com
25% off
$44.75
$60.41
Klein Tools NCVT1P Voltage Tester, Non-Contact Voltage Detector Pen, 50V To 1000V AC, Audible And Flashing LED Alarms, Pocket Clip Pack Of 2
vyroqi.com
$39.98
Klein Tools Premium Dual-Range NCVT And GFCI Receptacle Tester Electrical Test Kit | RT250KIT
Lowe's
1K+
$39.98
Klein Tools Premium Dual-Range NCVT And GFCI Receptacle Tester Electrical Test Kit | RT250KIT
Lowe's
1K+
$49.97
Klein Digital Circuit Breaker Finder With GFCI Outlet Tester ET310
Ohio Power Tool
4
$49.97
Klein Digital Circuit Breaker Finder With GFCI Outlet Tester ET310
Ohio Power Tool
4
$5.99
VC200 Spctelco AC Non Contact Voltage Detector/Tester 50-1000VAC
Specialized Products Company
$5.99
VC200 Spctelco AC Non Contact Voltage Detector/Tester 50-1000VAC
Specialized Products Company
$39.98
Klein Tools Test Kit With Multimeter, Non-Contact Volt Tester, Receptacle Tester | 69149P
Lowe's
129
$39.98
Klein Tools Test Kit With Multimeter, Non-Contact Volt Tester, Receptacle Tester | 69149P
Lowe's
129
$69.98
$97.98
Klein Tools ET310KIT - Circuit Breaker Finder Kit
TEquipment
273
28% off
$69.98
$97.98
Klein Tools ET310KIT - Circuit Breaker Finder Kit
TEquipment
273
$60.37
Digital Circuit Breaker Finder And Non-Contact Voltage Tester Tool Set
Home Depot
1K+
Free shipping
$60.37
Digital Circuit Breaker Finder And Non-Contact Voltage Tester Tool Set
Home Depot
1K+
$69.99
Klein Tools Circuit Breaker Finder Kit - ET310KIT
Acme Tools
273
$69.99
Klein Tools Circuit Breaker Finder Kit - ET310KIT
Acme Tools
273
$37.79
$42.99
Performance Tool W2990 Computer Safe LED Digital Circuit Tester 1985
CJ Pony Parts
12% off
$37.79
$42.99
Performance Tool W2990 Computer Safe LED Digital Circuit Tester 1985
CJ Pony Parts
$85.88
$115.94
Voltage Tester/Non-Contact Voltage Tester Pen,Dual Range AC 6V-1000V/90V-1000V With LCD Display,Electrical AC Detector For Live Null Wire Tester,2-IN1 Black,6.3X1.22X1.1Inch (0.43LB)
vyroqi.com
25% off
$85.88
$115.94
Voltage Tester/Non-Contact Voltage Tester Pen,Dual Range AC 6V-1000V/90V-1000V With LCD Display,Electrical AC Detector For Live Null Wire Tester,2-IN1 Black,6.3X1.22X1.1Inch (0.43LB)
vyroqi.com
$49.97
Digital Circuit Breaker Finder With GFCI Outlet Tester
Home Depot
4
Free shipping
$49.97
Digital Circuit Breaker Finder With GFCI Outlet Tester
Home Depot
4
$44.99
Klein Tools AFCI/GFCI Outlet Tester - RT310
Acme Tools
1K+
$44.99
Klein Tools AFCI/GFCI Outlet Tester - RT310
Acme Tools
1K+
$64.98
Klein Tools ET270: Klein Tools Digital Multi-Tester Multimeters (DMM) With Receptacle Tester
Summit Racing
190
$64.98
Klein Tools ET270: Klein Tools Digital Multi-Tester Multimeters (DMM) With Receptacle Tester
Summit Racing
190
$39.99
Klein Tools NCVT-4IR: Klein Tools Non-Contact Voltage Testers With Infrared Thermometers
Summit Racing
4K+
$39.99
Klein Tools NCVT-4IR: Klein Tools Non-Contact Voltage Testers With Infrared Thermometers
Summit Racing
4K+
$9.50
Gardner Bender 2-Piece Electrical Tester Kit
iverybers.com
2K+
Free shipping
$9.50
Gardner Bender 2-Piece Electrical Tester Kit
iverybers.com
2K+
$12.81
$26.99
Performance Tool W2992 Circuit Tester LCD Digital
CJ Pony Parts
360
52% off
$12.81
$26.99
Performance Tool W2992 Circuit Tester LCD Digital
CJ Pony Parts
360
$19.26
Cordless Circuit Tester PTW2979
etrailer.com
496
$19.26
Cordless Circuit Tester PTW2979
etrailer.com
496
$13.98
Klein Tools GFCI Outlet Tester RT210
WebstaurantStore
2
$13.98
Klein Tools GFCI Outlet Tester RT210
WebstaurantStore
2
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Shop Circuit Testers for House Wiring

Sponsored
About our ads
$44.97
$49.97
Klein Tools ET310 AC Circuit Breaker Finder, Electric And Voltage Tester With Integrated GFCI Outlet Tester
Amazon.com
24K+
Free shipping
10% off
$44.97
$49.97
Klein Tools ET310 AC Circuit Breaker Finder, Electric And Voltage Tester With Integrated GFCI Outlet Tester
Amazon.com
24K+
$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
9K+
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
9K+
$52.17
$57.99
Extech CB10 AC Circuit Breaker Finder/Receptacle Tester
Test Equipment Depot
2K+
10% off
$52.17
$57.99
Extech CB10 AC Circuit Breaker Finder/Receptacle Tester
Test Equipment Depot
2K+
$3,415.00
Megger 514242-2 Electronic DETEX Voltage Detector, 200 To 550 Kv
Test Equipment Depot
$3,415.00
Megger 514242-2 Electronic DETEX Voltage Detector, 200 To 550 Kv
Test Equipment Depot
$277.95
$293.00
BK Precision 881 In-Circuit ESR And DC Resistance Capacitor Tester
Test Equipment Depot
3
$277.95
$293.00
BK Precision 881 In-Circuit ESR And DC Resistance Capacitor Tester
Test Equipment Depot
3
$89.99
Autel Powerscan PS100 Power Circuit Probe Kit, 2026 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, 2026 Advanced Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Tool, Activate
Amazon.com
Free shipping
$13.28
Leviton Lvlok-Tst Levlok Circuit Analyzer
Gordon Electric Supply
$13.28
Leviton Lvlok-Tst Levlok Circuit Analyzer
Gordon Electric Supply
$85.00
BT-100 SCHUMACHER ELECTRIC CORP - Test Equipment & Circuit Tester Supplies
Radwell.com
$85.00
BT-100 SCHUMACHER ELECTRIC CORP - Test Equipment & Circuit Tester Supplies
Radwell.com
$474.51
Extech Megohmmeter: 200 Megaohm To 2 Gigohm, CAT III 1000V, Test Volt 1,000V DC/250V DC/500V DC, LCD Model: 380260
Grainger
3
$474.51
Extech Megohmmeter: 200 Megaohm To 2 Gigohm, CAT III 1000V, Test Volt 1,000V DC/250V DC/500V DC, LCD Model: 380260
Grainger
3
$69.98
Klein Tools Circuit Breaker Finder Kit In Orange | ET310KIT
Lowe's
273
$69.98
Klein Tools Circuit Breaker Finder Kit In Orange | ET310KIT
Lowe's
273
$330.33
423541 TYCO - Test Equipment & Circuit Tester Supplies
Radwell.com
$330.33
423541 TYCO - Test Equipment & Circuit Tester Supplies
Radwell.com
$141.22
Extech Electrical Test Kit Model: CB10-KIT
Grainger
2K+
$141.22
Extech Electrical Test Kit Model: CB10-KIT
Grainger
2K+
$21.11
$22.95
TPI 40 Voltage And Continuity Testers - Type (Voltage Testers): Contact, Style (Voltage Testers): Hand Held, Voltage Tested: AC
TEquipment
$21.11
$22.95
TPI 40 Voltage And Continuity Testers - Type (Voltage Testers): Contact, Style (Voltage Testers): Hand Held, Voltage Tested: AC
TEquipment
$317.33
Extech Receptacle Tester With GFCI: Displays Peak Line Volt And Freq, GFCI & AC Circuit Analyzers Model: CT70
Grainger
2K+
$317.33
Extech Receptacle Tester With GFCI: Displays Peak Line Volt And Freq, GFCI & AC Circuit Analyzers Model: CT70
Grainger
2K+
$476.00
T130K4 NSI INDUSTRIES - Test Equipment & Circuit Tester Supplies
Radwell.com
$476.00
T130K4 NSI INDUSTRIES - Test Equipment & Circuit Tester Supplies
Radwell.com
$59.65
$68.06
Ideal 61-051 Circuit Tester
TEquipment
14
12% off
$59.65
$68.06
Ideal 61-051 Circuit Tester
TEquipment
14
$8.99
3-Wire Receptacle Tester
Home Depot
32
Free shipping
$8.99
3-Wire Receptacle Tester
Home Depot
32
$7.31
Receptacle Tester For Standard Outlets Tests NEMA 5-15P Sockets For Correct Wiring
CableWholesale
$7.31
Receptacle Tester For Standard Outlets Tests NEMA 5-15P Sockets For Correct Wiring
CableWholesale