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Our most popular products based on sales. Updated frequently.
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Any Department
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Tools & Home Improvement
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Electrical
Tools & Testers
Ammeters
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Circuit Testers
(Current)
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麻豆区 in Circuit Testers
#1
Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411
4.6 out of 5 stars
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8,849
13 offers from
$80.00
#2
Gardner Bender GTK-2 Safety Kit, GVD-3504 Non-Contact Voltage Tester and GFI-3501 GFI Tester, 2-Piece
4.3 out of 5 stars
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2,427
6 offers from
$28.02
#3
Gardner Bender GRT-3500 Standard Outlet Tester
4.6 out of 5 stars
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3,574
8 offers from
$13.67
#4
VCELINK Network Cable Tester, RJ45 Ethernet Cable Tester for Cat6/Cat5/Cat7 LAN Cable & RJ11 Phone Cable
4.4 out of 5 stars
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2,205
1 offer from
$18.99
#5
Proster Tone Generator Kit Wire Tracer Circuit Tester 200EP High Accuracy Cable Tester Line Finder Inductive Amplifier Probe Kit with Adjustable Volume for Network Cable Collation
4.1 out of 5 stars
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107
1 offer from
$53.19
#6
Outlet Tester Electrical GFCI Receptacle Detector with LCD Display, 90-250V Socket Tester, Circuit Polarity Voltage Detector, Plug Tester Breaker Finder with 6 Visual Indication CAT II 300V (CA Plug)
4.5 out of 5 stars
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455
3 offers from
$18.99
#7
Haobase DC 6V/12V/24V Auto Truck Car Electrical Circuit Continuity Tester Test Light Pen Tool with Indicator Light
4.6 out of 5 stars
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578
1 offer from
$13.99
#8
VDIAGTOOL V210 Automotive Electrical Open & Short Finder Circuit Tester Wire Breaker Finder Wire Tracer Fault Probe DC 6-42V
4.3 out of 5 stars
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219
2 offers from
$38.24
#9
GAYA Grounding Tester Earthing for Grounding Products, Electric Outlet Testing Plug in, GFCI Test, Receptacle and Plug Testers, Circuit, Ground, GFCI Outlet, Socket Power Check
4.4 out of 5 stars
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121
1 offer from
$12.99
#10
allsun em415Pro Circuit Break Short Auto Finder Cable Wire Breaker Tracker DC Under 42V,12V Battery Diagnostics Wire Tracking
4.0 out of 5 stars
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2,609
1 offer from
$29.93
#11
ANCEL PB100 Power Circuit Probe Kit,4-Modes Circuit Tester for 6V-30V Vehicle Electrical System,Automotive Short/Open Circuit Finder,Activate Component Ground Check,Continuity Polarity Test,40FT Cable
4.4 out of 5 stars
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2,595
1 offer from
$119.99
#12
NOYAFA NF-8209S Advanced Network Cable Tester, Cable Length Test, Port Flashing, Ethernet Cable Tracer with PoE/NCV, CAT5, CAT6 Multi-Function Trouble-Free Line Scan Mode,RJ45 Tracer Kit
4.6 out of 5 stars
鈥
81
2 offers from
$88.33
#13
NOYAFA 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 Adjustment
4.1 out of 5 stars
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194
3 offers from
$79.99
#14
Autel PowerScan PS100 Power Circuit Probe Kit 2025, 12V 24V Automotive Electrical Wire Tracer Circuit Relay Tester, Breaker Short Finder Digital Multimeter, Ground Check Activate Component, 40ft Cable
4.7 out of 5 stars
鈥
131
1 offer from
$129.00
#15
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 Protection
4.6 out of 5 stars
鈥
209
1 offer from
$25.99
#16
Merisky Outlet Tester for Grounding Products, Grounding Tester with GFCI, Receptacle Socket Tester for Proper Wiring, Circuit Tester for Electrical Assessment
5.0 out of 5 stars
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31
1 offer from
$13.99
#17
GFCI Receptacle Tester (New)
4.6 out of 5 stars
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1,800
9 offers from
$13.57
#18
Brileine Dual-Function Coaxial & RJ45 Network Cable Tester with 2-Pack BNC Male to F Female Adapters, CAT5/CAT6/Coax Continuity Checker (Battery Not Included)
4.2 out of 5 stars
鈥
203
1 offer from
$29.99
#19
VDIAGTOOL V500 Pro Automotive Power Circuit Probe Tester with Breaker Finder, 9V-30V Auto Electrical Circuit Tester Kit, Multimeter/Oscilloscope/Relay/Injector Test, Open Short Finder, 20FT Cable
4.5 out of 5 stars
鈥
513
2 offers from
$299.99
#20
OBDResource Smart Automotive Test Light 0.8V-100V Circuit Tester with Buzzer & Flashlight, DC Voltage Tester for Car Fuse, Polarity, Resistance and Continuity Test, Wire Diagnostics, Battery Analysis
4.8 out of 5 stars
鈥
45
2 offers from
$26.99
#21
Stanz (TM) Network Cable Tester for LAN Phone RJ45 RJ11 RJ12 Cat5 Cat6 Cat7 Cat8 FTP UTP Wire Test Tool Battery not Included
4.1 out of 5 stars
鈥
358
1 offer from
$10.99
#22
A and E Hand Tools 1138 Magnetic Retractable Test Lead
4.6 out of 5 stars
鈥
559
5 offers from
$59.95
#23
BOOGIIO Wire Tester RJ45 RJ11 Cable Tracker Line Finder Multifunction Wire Tracker Ethernet LAN Network Cat5 Cat6 with Earphone for Cable Collation, Network Maintenance Collation, Telephone Line Test
4.0 out of 5 stars
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1,174
3 offers from
$28.79
#24
Outlet Circuit Testers for Grounding Products 锛孍lectrical Receptacle Tester for North American Outlets Includes 7 Visual Indications and Wiring Legend
4.4 out of 5 stars
鈥
8
1 offer from
$9.90
#25
VCELINK Network Cable Tester, Ethernet Wire Test Tool for RJ45 CAT6A, CAT6, CAT5E, CAT5 Cable and RJ11 Phone Cable, Black, 1-Pack
4.5 out of 5 stars
鈥
30
1 offer from
$18.99
#26
KZYEE KM10 Power Circuit Probe Kit, 12V/24V Automotive Circuit Tester, Digital Multimeter, Short/Open Finder, AC/DC Voltage, Continuity, Diode, Relay, Resistance Test, Component Activator, 40FT Cable
4.3 out of 5 stars
鈥
3,634
2 offers from
$98.99
#27
Aochinmoto Upgraded 3.5-36V Automotive Circuit Tester, Test Light with 177 Inch Longer Leads, Power Probe,Car Component Activation Short Circuit Finder Continuity Test
4.2 out of 5 stars
鈥
52
1 offer from
$29.99
#28
Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles
4.8 out of 5 stars
鈥
10,107
15 offers from
$40.34
#29
Kefly 7-Way Round Pin Trailer Truck Circuit Plug Tester Replace 7865L, Trailer Tractor Light Tester
4.7 out of 5 stars
鈥
122
5 offers from
$39.99
#30
TuNan 6V-12V-24V DC Car Circuit Tester Light, Professional Auto Voltage Continuity Test, Automotive Electrical Volt Test Light/Long Probe for Wire/Fuse/Socket and More - Red
4.3 out of 5 stars
鈥
495
1 offer from
$14.79
#31
NOYAFA NF-8209 Network Cable Tester, Ethernet Ethernet Wire Tracker, PoE Test with NCV for CAT5e/CAT6/CAT6a, LAN Tester for Tracker Underground Telephone Line Finder Home Repair, Length Test
4.3 out of 5 stars
鈥
1,848
2 offers from
$72.99
#32
Meagkka Power Circuit Probe Tester, 6-24V Automotive Circuit Tester, Auto Electrical System Test Tool DC Digital Voltage Short Finder Car Truck Circuit Test Pen
4.5 out of 5 stars
鈥
78
1 offer from
$20.99
#33
Klein Tools ET310 AC Circuit Breaker Finder, Electric Tester With Integrated GFCI Outlet Tester
4.6 out of 5 stars
鈥
22,280
#34
TuNan 6V-12V-24V DC Car Circuit Tester Light, Professional Auto Voltage Continuity Test, Automotive Electrical Volt Test Light/Long Probe for Wire/Fuse/Socket and More - Black
4.4 out of 5 stars
鈥
428
1 offer from
$13.70
#35
Lisle 28400 Heavy Duty Circuit Tests Low-Voltage Up to 12-Volts
4.6 out of 5 stars
鈥
511
12 offers from
$25.50
#36
Triplett AC Line Splitter and GFCI Outlet/Receptacle Tester with 5 Visual Indicators (ET200)
4.6 out of 5 stars
鈥
713
4 offers from
$30.57
#37
Power Probe PWP-PPECT3000 - ECT3000 Short/Open Electrical Circuit Tester
4.6 out of 5 stars
鈥
650
9 offers from
$229.95
#38
NOYAFA NF-826 Underground Cable Locator Wire Tracker, Wall and Underground Pipeline Wire Detector, Advanced Circuit Breaker Finder for Dog Fence Cables Irrigation, Wall and Underground Cables, NCV
4.2 out of 5 stars
鈥
958
2 offers from
$195.99
#39
Carrying Case Compatible with Klein Tools ET310 AC/80101/80016 Circuit Breaker Finder,GFCI Outlet Tester,69149P Electrical Test Kit,Circuit Tester Storage Organizer for Digital Multimeter,Clamp Meter
4.7 out of 5 stars
鈥
186
1 offer from
$26.99
#40
Linkstyle 2PCS Test Light, 3V-48V Digital LED Circuit Tester with Voltage Display, Auto Bidirectional Electrical Voltage Tester with Extended Spring Wire & Probe
4.2 out of 5 stars
鈥
399
1 offer from
$25.99
#41
VDIAGTOOL 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 Cable
4.4 out of 5 stars
鈥
142
3 offers from
$139.98
#42
Klein Tools ET310TRANS ET310 Circuit Breaker Finder Replacement Transmitter, Digital Circuit Breaker Finder, Integrated GFCI Outlet Tester
4.8 out of 5 stars
鈥
166
17 offers from
$27.77
#43
Yaetek Multi Function Automotive Circuit Test Leads Kit Electrical Testers Auto Diagnostic Tools Wire Connectors Adapter Cables Set
3.8 out of 5 stars
鈥
28
1 offer from
$119.99
#44
Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit for Energized and Non-Energized Breakers, Fuses, and Wires
4.7 out of 5 stars
鈥
1,211
5 offers from
$349.95
#45
Circuit Finder, 50-60Hz 90-120V Professional Circuit Breaker Finder Sensitivity Adjustable Socket Tester Diagnostic-Tool
4.1 out of 5 stars
鈥
66
3 offers from
$38.78
#46
allsun AC 100-120V Circuit Breaker Finder,Miniature Circuit Detector,Non-Contact Voltage Sensor LED Auto-Sensing Receiver Transmitter,Locate AC Circuits/Fuses Socket Plugs
3.7 out of 5 stars
鈥
229
2 offers from
$38.99
#47
MECMO 360掳 Rotatable Vehicle Side Trailer Socket Tester, 7 Way Blade & 4 Pin Trailer Light Wire Circuit Tester 6 Function LED Indicators Towing Vehicle Trailer Wiring Plug Tester for RV Truck
4.2 out of 5 stars
鈥
132
2 offers from
$26.99
#48
AWBLIN Automotive Buzzer Test Light, DC 6-24V Dual Color LED Bulb Auto Circuit Tester, Electric Tester Light Tool Probe for Car Vehicle Fuses and Battery Voltage
4.6 out of 5 stars
鈥
504
1 offer from
$23.80
#49
Case Compatible with Klein Tools ET310 AC Circuit Breaker Finder & 80041 Outlet Repair Tool Kit & RT250 GFCI Receptacle Tester. Electrical Storage Organizer Holder Bag (Box Only)-Orange Inner
4.2 out of 5 stars
鈥
39
1 offer from
$26.14
#50
JDIAG Power Circuit Probe Tester 8V-32V DC PB10 Circuit Tester Test Light Component Activation Short Circuit Finder Continuity Voltage Tester Trailer Lights Grounding Test
3.8 out of 5 stars
鈥
75
3 offers from
$27.99
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