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System Tester(408)
Uses item details. Price when purchased online
Autel PowerScan PS100 Automotive Circuit Tester, Power Circuit Probe Scan Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance, 20ft Extension Cord, for 99% Car $89.99
Sponsored
$8999
current price $89.99Autel PowerScan PS100 Automotive Circuit Tester, Power Circuit Probe Scan Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance, 20ft Extension Cord, for 99% Car
15 out of 5 Stars. 1 reviews
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Autel PowerScan PS100 Automotive Circuit Tester, Power Circuit Probe Scan Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance, 20ft Extension Cord $89.99
Sponsored
$8999
current price $89.99Autel PowerScan PS100 Automotive Circuit Tester, Power Circuit Probe Scan Tool, 12-24V Electrical Short Open Breaker Circuit Finder, AC/DC Current Resistance, 20ft Extension Cord
14 out of 5 Stars. 1 reviews
UT-LNTELA EM415PRO Automotive Electrical Circuit Tester, 6-42V Car Circuit Scanner Wire Tracer for Cars, Trucks and Boats $14.99
Sponsored
$1499
current price $14.99UT-LNTELA EM415PRO Automotive Electrical Circuit Tester, 6-42V Car Circuit Scanner Wire Tracer for Cars, Trucks and Boats
Autel IM608S II Scanner with Power Circuit Tester PS100 $2,879.00
Sponsored
$2,87900
current price $2,879.00Autel IM608S II Scanner with Power Circuit Tester PS100
Asunby 3-in-1 Water Quality Tester TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems $10.00 Was $13.99
Now$1000
current price Now $10.00, Was $13.99$13.99
Asunby 3-in-1 Water Quality Tester TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems
34.7 out of 5 Stars. 3 reviews
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AUTOOL BT210 Automotive Power Circuit Probe Kit,12V 24V DC Electrical System Tool, Digital Voltage Short Finder, Car Fuse Relay Tester,9-30V Circuit Tester, LED From $18.79
6 options
Available in additional 6 optionsFrom$1879
AUTOOL BT210 Automotive Power Circuit Probe Kit,12V 24V DC Electrical System Tool, Digital Voltage Short Finder, Car Fuse Relay Tester,9-30V Circuit Tester, LED
1664.1 out of 5 Stars. 166 reviews
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Clearance Water Tester,Instant 4-in-1 TDS Meter Digital Water Tester for Drinking Water,Accurate 0–9990 PPM EC & Temp Readings,Ideal for RO Systems,Aquariums,Pools – Easy for Anyone(White) From $5.69
From$569
Water Tester,Instant 4-in-1 TDS Meter Digital Water Tester for Drinking Water,Accurate 0–9990 PPM EC & Temp Readings,Ideal for RO Systems,Aquariums,Pools – Easy for Anyone(White)
2025 AllNew 4 in 1 Tds Meter Digital Water Tester Accurate And Reliable Tds Ec & Temp(°C ,°F) Meter 09990Ppm Professional Testing for Drinking Water, Ro/Di System, Aquariums Etc Was $6.69
2025 AllNew 4 in 1 Tds Meter Digital Water Tester Accurate And Reliable Tds Ec & Temp(°C ,°F) Meter 09990Ppm Professional Testing for Drinking Water, Ro/Di System, Aquariums Etc
Best seller Most Accurate So Far 4-in-1 Instant Read TDS Meter - Measures TDS, EC, & Temperature (°C/°F) - Digital Water Testing Kit for Tap, Well, Pool, Hydroponics, Aquarium, RO/DI System -Blue From $7.59
From$759
Most Accurate So Far 4-in-1 Instant Read TDS Meter - Measures TDS, EC, & Temperature (°C/°F) - Digital Water Testing Kit for Tap, Well, Pool, Hydroponics, Aquarium, RO/DI System -Blue
23 out of 5 Stars. 2 reviews
AUTOOL Automotive Circuit Diagnostic Tester, 6V 12V 24V Power Probe with Voltage/Short Circuit/Ground Supply/Battery Test for Auto Electrical System Repair, BT160 $19.99 Was $22.99
Now$1999
current price Now $19.99, Was $22.99$22.99
AUTOOL Automotive Circuit Diagnostic Tester, 6V 12V 24V Power Probe with Voltage/Short Circuit/Ground Supply/Battery Test for Auto Electrical System Repair, BT160
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ANCEL PB500, 65V Red Digital Circuit Probe Kit Power Scan Automotive Circuit Tester From $49.99
Sponsored
From$4999
ANCEL PB500, 65V Red Digital Circuit Probe Kit Power Scan Automotive Circuit Tester
254.5 out of 5 Stars. 25 reviews
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Best seller NOYAFA NF-826 Underground Cable Tester & Locator Circuit Tracer Tool for Detecting Wall and Underground Wires, Cables, Water, and Gas Pipeline Paths $121.59
Sponsored
$12159
current price $121.59NOYAFA NF-826 Underground Cable Tester & Locator Circuit Tracer Tool for Detecting Wall and Underground Wires, Cables, Water, and Gas Pipeline Paths
154.7 out of 5 Stars. 15 reviews
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New 4 in 1 Tds Meter Digital Water Teste,Water Tester for Drinking Waters for Tap,Well,Pool,Hydroponics,Aquarium,Ro/Di System,Compact and Portable (White-Leather Case)
New 4 in 1 Tds Meter Digital Water Teste,Water Tester for Drinking Waters for Tap,Well,Pool,Hydroponics,Aquarium,Ro/Di System,Compact and Portable (White-Leather Case)
1 Pc Power Circuit Probe Tester, LCD Digital Automotive Test Light with Voltage Display&Illumination, DC Voltage Tester, Electrical System Tool, Relay Fuse Continuity Current Test. $24.00
$2400
current price $24.001 Pc Power Circuit Probe Tester, LCD Digital Automotive Test Light with Voltage Display&Illumination, DC Voltage Tester, Electrical System Tool, Relay Fuse Continuity Current Test.
15 out of 5 Stars. 1 reviews
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Kieccall Automotive Circuit Tester Electronic Diagnostic Tool For Car Electrical System Testing Disconnection Repair Vehicle Maintenance Was $19.99
Kieccall Automotive Circuit Tester Electronic Diagnostic Tool For Car Electrical System Testing Disconnection Repair Vehicle Maintenance
Katzco, 6-12 V White Voltage Continuity & Current Circuit Tester
Katzco, 6-12 V White Voltage Continuity & Current Circuit Tester
424.4 out of 5 Stars. 42 reviews
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Flash Deal Automotive Test Light 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 Checker $10.79 Was $11.99
Now$1079
current price Now $10.79, Was $11.99$11.99
Automotive Test Light 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 Checker
74.9 out of 5 Stars. 7 reviews
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Associated Equipment System Tester, Digital, Resistance 12-1015 $597.65
$59765
current price $597.65Associated Equipment System Tester, Digital, Resistance 12-1015
2025 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
2025 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9990ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
PH Meter,TDS Meter Combo,Pool Water Test Kit,PH Tester Digital,PPM Meter,0.01 Resolution TDS PH EC Temperature 4 in 1 Set for Drinking Water,Hydroponics,RO System,Aquarium,Swimming Was $19.99
PH Meter,TDS Meter Combo,Pool Water Test Kit,PH Tester Digital,PPM Meter,0.01 Resolution TDS PH EC Temperature 4 in 1 Set for Drinking Water,Hydroponics,RO System,Aquarium,Swimming
ANCEL PB600 Power Circuit Probe Tool with Battery/Relay/Injector Test, 8-35V Automotive Electrical Circuit Tester $189.99 Was $359.99
Sponsored
Now$18999
current price Now $189.99, Was $359.99$359.99
ANCEL PB600 Power Circuit Probe Tool with Battery/Relay/Injector Test, 8-35V Automotive Electrical Circuit Tester
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Best seller SUPTREE Digital PH Meter Tester for Water Pool- 0.01ph High Accuracy Pen PH Tester for Cosmetic, Lotion, Foods and Water $8.99 Was $17.99
Sponsored
Now$899
current price Now $8.99, Was $17.99$17.99
SUPTREE Digital PH Meter Tester for Water Pool- 0.01ph High Accuracy Pen PH Tester for Cosmetic, Lotion, Foods and Water
2204.1 out of 5 Stars. 220 reviews
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Digital PH Meter, 5 in 1 Pool Salt Tester for Water PH / TDS / EC / Salinity / Temp Meter with ATC, for Household Drinking Water Hot Tub Spas Fish Tank $21.99
$2199
current price $21.99Digital PH Meter, 5 in 1 Pool Salt Tester for Water PH / TDS / EC / Salinity / Temp Meter with ATC, for Household Drinking Water Hot Tub Spas Fish Tank
383.6 out of 5 Stars. 38 reviews
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Amerteer Digital PH Meter Water Quality Tester for Food Brewing Hydroponics Aquarium RO System Pools, 0-14PH Automatic Temperature Compensation 0.01pH Accuracy, for Household Drinking Water, Aquarium $10.37 Was $13.43
Now$1037
current price Now $10.37, Was $13.43$13.43
Amerteer Digital PH Meter Water Quality Tester for Food Brewing Hydroponics Aquarium RO System Pools, 0-14PH Automatic Temperature Compensation 0.01pH Accuracy, for Household Drinking Water, Aquarium
Best seller AUTOOL BT360 Automotive Battery Tester, 8V-29V Digital Batteries Analyzer, 30-2000CCA Charging & Cranking Detector for Car Motorcycle Truck and More 4-300 AH From $15.99
7 options
Available in additional 7 optionsFrom$1599
AUTOOL BT360 Automotive Battery Tester, 8V-29V Digital Batteries Analyzer, 30-2000CCA Charging & Cranking Detector for Car Motorcycle Truck and More 4-300 AH
1234.4 out of 5 Stars. 123 reviews
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PS100 Automotive Electrical System Diagnosis Tool Power Circuit Tester Probe Kit AVOmeter Car Continuity Checker ,Fast Responses $166.80
$16680
current price $166.80PS100 Automotive Electrical System Diagnosis Tool Power Circuit Tester Probe Kit AVOmeter Car Continuity Checker ,Fast Responses
Automotive Current Tester, Current Detector & Leakage/Fault Detection Tool (Without Battery), Digital Display Circuit Tester With Usb Connection For Car Electrical System
Automotive Current Tester, Current Detector & Leakage/Fault Detection Tool (Without Battery), Digital Display Circuit Tester With Usb Connection For Car Electrical System
DAMAI 2025 New 4 in 1 Digital Water Quality Tester,0-9990PPM TDS Meter Digital Water Tester,Professional Testing for Drinking Water, Hydroponics, Aquariums, RO Systems Swimming Pools
DAMAI 2025 New 4 in 1 Digital Water Quality Tester,0-9990PPM TDS Meter Digital Water Tester,Professional Testing for Drinking Water, Hydroponics, Aquariums, RO Systems Swimming Pools
4 in 1 TDS Meter Digital Water Tester,TDS EC & Temperature(C,F) Meter,Digital Water Quality Tester for Drinking Water,Tap,Well,Swimming Pool,Hydroponics,Aquarium,RO/DI System $8.99
$899
current price $8.994 in 1 TDS Meter Digital Water Tester,TDS EC & Temperature(C,F) Meter,Digital Water Quality Tester for Drinking Water,Tap,Well,Swimming Pool,Hydroponics,Aquarium,RO/DI System
Associated 6042 - Electrical System Tester, 12/24V 500A Digital $2,380.13
$2,38013
current price $2,380.13Associated 6042 - Electrical System Tester, 12/24V 500A Digital
Asunby 3-in-1 Water Quality Tester – TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems $10.00 Was $13.99
Sponsored
Now$1000
current price Now $10.00, Was $13.99$13.99
Asunby 3-in-1 Water Quality Tester – TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems
34.7 out of 5 Stars. 3 reviews
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VEVOR Underground Cable Locator, 3 FT Max. Detection Depth, Wire Tracer Break Detector Finder with Earphone, 1000 FT Max.Detection Length Cable Tester for Pet Fence Buried Sprinkler Valve Irrigation $33.90
Sponsored
$3390
current price $33.90VEVOR Underground Cable Locator, 3 FT Max. Detection Depth, Wire Tracer Break Detector Finder with Earphone, 1000 FT Max.Detection Length Cable Tester for Pet Fence Buried Sprinkler Valve Irrigation
24 out of 5 Stars. 2 reviews
Auto Circuit Fault Testing Tool 0.01A~19.99A Automotive Current Tester with Backlit Display, Car Battery Drain & Electrical Leakage Detector for Vehicle Diagnostics $21.89
$2189
current price $21.89Auto Circuit Fault Testing Tool 0.01A~19.99A Automotive Current Tester with Backlit Display, Car Battery Drain & Electrical Leakage Detector for Vehicle Diagnostics
Worgeous Automotive Circuit Tester with Positive Negative Clips for Car Electrical Systems 624V $21.10 Was $23.71
Now$2110
current price Now $21.10, Was $23.71$23.71
Worgeous Automotive Circuit Tester with Positive Negative Clips for Car Electrical Systems 624V
Car Cable Wire Short Open Finder Electric System Diagnostic Circuit Tester Tool $45.39
$4539
current price $45.39Car Cable Wire Short Open Finder Electric System Diagnostic Circuit Tester Tool
EDHITNR Automotive Circuit Tester, 0.8-100V Digital LED Voltage Resistance Detector Pen, Car Electrical System Diagnostic Tool for Lights Horns Engine Faults $14.49
$1449
current price $14.49EDHITNR Automotive Circuit Tester, 0.8-100V Digital LED Voltage Resistance Detector Pen, Car Electrical System Diagnostic Tool for Lights Horns Engine Faults
Clearance Kieccall Automotive Circuit Tester Digital Multimeter with Open Short Finder 20A 48V Relay Fuse Diagnostic Tool for Car Electrical System Was $19.99
Kieccall Automotive Circuit Tester Digital Multimeter with Open Short Finder 20A 48V Relay Fuse Diagnostic Tool for Car Electrical System
Clearance Pool Salt Tester, Digital Salt Water Pool Tester & Ph Tester, Salt Tester for Saltwater Pool, Digital Salinity Tester for Water, 5 In 1 Salinity Ph Temp EC and Tds Meter for Pool, Saltwater Aquarium Was $26.99
Pool Salt Tester, Digital Salt Water Pool Tester & Ph Tester, Salt Tester for Saltwater Pool, Digital Salinity Tester for Water, 5 In 1 Salinity Ph Temp EC and Tds Meter for Pool, Saltwater Aquarium
GODIAG GT101 Power Circuit Probe Tester, Auto Short Circuit, Relay Fuse / Voltage Tester, 6V 40V DC Auto Electrical System Test Tool Kit $45.99
$4599
current price $45.99GODIAG GT101 Power Circuit Probe Tester, Auto Short Circuit, Relay Fuse / Voltage Tester, 6V 40V DC Auto Electrical System Test Tool Kit
94.2 out of 5 Stars. 9 reviews
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Midtronics MIDPBT100 Automotive Battery & Electrical System Tester $289.26
$28926
current price $289.26Midtronics MIDPBT100 Automotive Battery & Electrical System Tester
6 Way Automotive Tester Circuit with LED Indicator Light for Boat and Car Electrical Systems
6 Way Automotive Tester Circuit with LED Indicator Light for Boat and Car Electrical Systems
4-in-1 TDS Water Tester Digital Meter - Measures TDS EC Temperature, 0-9990PPM, Accurate Tester for Drinking Water RO/DI System Aquarium $15.87
$1587
current price $15.874-in-1 TDS Water Tester Digital Meter - Measures TDS EC Temperature, 0-9990PPM, Accurate Tester for Drinking Water RO/DI System Aquarium
Best seller SUPTREE Digital PH Meter Tester for Water Pool- 0.01ph High Accuracy Pen PH Tester for Cosmetic, Lotion, Foods and Water $8.99 Was $17.99
Now$899
current price Now $8.99, Was $17.99$17.99
SUPTREE Digital PH Meter Tester for Water Pool- 0.01ph High Accuracy Pen PH Tester for Cosmetic, Lotion, Foods and Water
2204.1 out of 5 Stars. 220 reviews
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Power Circuit Probe Tester, 6-24V Automotive Circuit Tester, Auto Electrical System Test Tool DC Digital Voltage Short Finder Car Truck Circuit Test Pen $18.99
$1899
current price $18.99Power Circuit Probe Tester, 6-24V Automotive Circuit Tester, Auto Electrical System Test Tool DC Digital Voltage Short Finder Car Truck Circuit Test Pen
11 out of 5 Stars. 1 reviews
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AUTOOL BT210 Automotive Power Circuit Probe Tester Fuse Tester 9V-30V DC Electrical System Voltage Tester for AV Ometer Multimeter Cars Truck Motorcycle $19.79 Was $21.99
Now$1979
current price Now $19.79, Was $21.99$21.99
AUTOOL BT210 Automotive Power Circuit Probe Tester Fuse Tester 9V-30V DC Electrical System Voltage Tester for AV Ometer Multimeter Cars Truck Motorcycle
11 out of 5 Stars. 1 reviews
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Automotive Power Circuit Tester with LED Light - DC Power Probe for 6-24V, Short Finder, Continuity & Resistance Check | Car Electrical Diagnostic Tool $15.99 Was $20.99
Now$1599
current price Now $15.99, Was $20.99$20.99
Automotive Power Circuit Tester with LED Light - DC Power Probe for 6-24V, Short Finder, Continuity & Resistance Check | Car Electrical Diagnostic Tool
155 out of 5 Stars. 15 reviews
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Relay Circuit Tester Automotive Relay Tester, Relay Bypass Switch Kit 24V/12V Relay Tester Automotive Kit For Vehicle Electrical System Maintenance $155.99
$15599
current price $155.99Relay Circuit Tester Automotive Relay Tester, Relay Bypass Switch Kit 24V/12V Relay Tester Automotive Kit For Vehicle Electrical System Maintenance
MR CARTOOL 12V 24V Automotive Circuit Tester Test Light Electrical System Diagnostic Tool $53.99 Was $59.99
Now$5399
current price Now $53.99, Was $59.99$59.99
MR CARTOOL 12V 24V Automotive Circuit Tester Test Light Electrical System Diagnostic Tool
25 out of 5 Stars. 2 reviews
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6 Way Automotive Tester Circuit with LED Indicator Light for Boat and Car Electrical Systems
6 Way Automotive Tester Circuit with LED Indicator Light for Boat and Car Electrical Systems
ARTESIA TOOL Electric Circuit Tester | Compact 4.25" Size| Tests 110V, 220V, 277V, and 460V Systems | Outlets, Fuses, Spark Plugs & More | Battery-Free Operation $10.48
$1048
current price $10.48ARTESIA TOOL Electric Circuit Tester | Compact 4.25" Size| Tests 110V, 220V, 277V, and 460V Systems | Outlets, Fuses, Spark Plugs & More | Battery-Free Operation
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