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All AgricultureAll IndustrialAir Quality & Gas AnalyzersBarometersCalibrationChemicalsData RecordersElectrical TestingElectronic & Bench TestingHumidity MonitorsInspection & Analysis ToolsMicroscopesMotion, Speed, Force MeasurementMSANetwork and Cable TestersPH and ThermometersPoultry CarePressure & VacuumScalesSurface TestingTemperature & HumidityWater Quality & InstrumentationWeather StationsWeight, Sound, and Light MeasurementWind Speed Gauges
System Tester(416)
Uses item details. Price when purchased online
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
4.5 out of 5 stars
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
4.4 out of 5 stars
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
4 out of 5 stars
Best seller NOYAFA NF-827 Circuit Breaker Finder with GFCI Outlet Tester and NCV Detection up to 1000V $32.99
Best seller
Sponsored
$3299
current price $32.99NOYAFA NF-827 Circuit Breaker Finder with GFCI Outlet Tester and NCV Detection up to 1000V
4.4 out of 5 stars
Best seller EverStart 6-24V Automotive Circuit Tester, Bidirectional Polarity Test Light with Red/Green LED Indicator $5.44
Best seller
$544
current price $5.44EverStart 6-24V Automotive Circuit Tester, Bidirectional Polarity Test Light with Red/Green LED Indicator
4.4 out of 5 stars
Deal All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc $10.98
Deal
$1098
current price $10.98All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
4.9 out of 5 stars
Best seller 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 From $9.98
Best seller
From$998
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
4.9 out of 5 stars
M Buder P60 Automotive Circuit Tester Car Electrical System Short Tester 6-30V DC LCD Display Flashlight Component Activation Continuity Testing Grounding Detection Trace Locate Short Circuits $29.25
$2925
current price $29.25M Buder P60 Automotive Circuit Tester Car Electrical System Short Tester 6-30V DC LCD Display Flashlight Component Activation Continuity Testing Grounding Detection Trace Locate Short Circuits
Deal AUTOOL BT360 Car Battery Tester, 8V-29V Digital Batteries Analyzer, 30-2000CCA Charging & Cranking Detector for Car Motorcycle Truck From $18.94
Deal
7 options
Available in additional 7 optionsFrom$1894
AUTOOL BT360 Car Battery Tester, 8V-29V Digital Batteries Analyzer, 30-2000CCA Charging & Cranking Detector for Car Motorcycle Truck
4.5 out of 5 stars
Best seller TDS Meter Digital Water Tester, Accurate Professional 4-in-1 TDS, Temperature and EC Meter, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums,Water Tester for Drinking Water $10.99 Was $19.99
Best seller
Now$1099
current price Now $10.99, Was $19.99$19.99
TDS Meter Digital Water Tester, Accurate Professional 4-in-1 TDS, Temperature and EC Meter, 0-9990ppm, Ideal Water Test Meter for Drinking Water, Aquariums,Water Tester for Drinking Water
4.1 out of 5 stars
MRCARTOOL Power Circuit Probe Tester Automotive -Digital Power Circuit Probe Electrical Tester 12V/24V Circuit Tester 13 Languages Automotive Short Finder Voltage Activating Component Tool From $59.99
Sponsored
From$5999
MRCARTOOL Power Circuit Probe Tester Automotive -Digital Power Circuit Probe Electrical Tester 12V/24V Circuit Tester 13 Languages Automotive Short Finder Voltage Activating Component Tool
5 out of 5 stars
VDIAGTOOL V200 Pro Automotive Power Probe Tester Circuit Breaker Finder Tool 12/24V Electrical Open Short Circuit Finder Wire Tracer AC/DC Trailer Relay Fuse Tester for Cars $89.99
Sponsored
$8999
current price $89.99VDIAGTOOL V200 Pro Automotive Power Probe Tester Circuit Breaker Finder Tool 12/24V Electrical Open Short Circuit Finder Wire Tracer AC/DC Trailer Relay Fuse Tester for Cars
5 out of 5 stars
Best seller Asunby 3-in-1 Water Quality Tester TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems $10.79
Best seller
$1079
current price $10.79Asunby 3-in-1 Water Quality Tester TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems
4.2 out of 5 stars
Automotive Circuit Tester Digital Test Electric Voltage Power Test System Probe Car Voltage Tester Test Tool $19.65
$1965
current price $19.65Automotive Circuit Tester Digital Test Electric Voltage Power Test System Probe Car Voltage Tester Test Tool
5 out of 5 stars
Automotive Power Circuit Probe Tester with 4M Lead, 6-24V DC LED Light, Battery & Fuse Tester, Auto Electrical Tool $15.99
$1599
current price $15.99Automotive Power Circuit Probe Tester with 4M Lead, 6-24V DC LED Light, Battery & Fuse Tester, Auto Electrical Tool
4.3 out of 5 stars
Automotive Electric Circuit Tester Car Electrical System Tester Automobile Circuit Tester With Power Switch Vehicle Diagnostic $17.99
$1799
current price $17.99Automotive Electric Circuit Tester Car Electrical System Tester Automobile Circuit Tester With Power Switch Vehicle Diagnostic
KZYEE KM05 Power Circuit Probe Tester, 12V 24V Automotive Circuit System Diagnostic Tool, Electrical Tester Lead Device System, AC/DC Voltage Tester, Diode Resistance Tester, Activating Component $55.99
$5599
current price $55.99KZYEE KM05 Power Circuit Probe Tester, 12V 24V Automotive Circuit System Diagnostic Tool, Electrical Tester Lead Device System, AC/DC Voltage Tester, Diode Resistance Tester, Activating Component
Automotive Fuse Circuit Tester, 20A/48V Current Tester with Backlit LCD Display, Portable Electrical Diagnostic Tool for Car Battery & Electrical System Testing From $23.17
From$2317
Automotive Fuse Circuit Tester, 20A/48V Current Tester with Backlit LCD Display, Portable Electrical Diagnostic Tool for Car Battery & Electrical System Testing
Clearance VKLU Digital TDS Meter Water Quality Tester, 0-9990 PPM Portable PPM Monitor for Drinking Water, RO System & Aquariums, Fast Read Purity Checker From $2.99
Clearance
From$299
VKLU Digital TDS Meter Water Quality Tester, 0-9990 PPM Portable PPM Monitor for Drinking Water, RO System & Aquariums, Fast Read Purity Checker
Power Circuit Probe Tester, 6-24V Automotive Circuit Tester, Auto Electrical System Test Tool DC Digital Voltage Short Finder Car Truck Circuit Test Pen $16.99
$1699
current price $16.99Power Circuit Probe Tester, 6-24V Automotive Circuit Tester, Auto Electrical System Test Tool DC Digital Voltage Short Finder Car Truck Circuit Test Pen
1 out of 5 stars
VEVOR Automotive Circuit Tester Kit, 8 - 35 DCV Power Circuit Probe Tester with TFT Color Display and Lighting, 2-in-1 Electrical Automotive Power Tester Probe with 19.7 ft / 6 m Extension Cable $93.90
Sponsored
$9390
current price $93.90VEVOR Automotive Circuit Tester Kit, 8 - 35 DCV Power Circuit Probe Tester with TFT Color Display and Lighting, 2-in-1 Electrical Automotive Power Tester Probe with 19.7 ft / 6 m Extension Cable
Deal All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc $10.98
Deal
Sponsored
$1098
current price $10.98All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(°C,°F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
4.9 out of 5 stars
Tester Automotive Light Tester, 0.8-100V Car Digital LED Circuit Tester Vehicle Voltage Resistance Detector Pen Electrical System Test Tools $8.49
$849
current price $8.49Tester Automotive Light Tester, 0.8-100V Car Digital LED Circuit Tester Vehicle Voltage Resistance Detector Pen Electrical System Test Tools
4 out of 5 stars
Best seller NOYAFA NF-827 Circuit Breaker Finder with GFCI Outlet Tester and NCV Detection up to 1000V $32.99
Best seller
$3299
current price $32.99NOYAFA NF-827 Circuit Breaker Finder with GFCI Outlet Tester and NCV Detection up to 1000V
4.4 out of 5 stars
Car Electric Circuit Tester,6-24V DC Automotive Electrical System Tester,Power Circuit Probe Tester,Dc Test Light Automotive Short Circuit Finder Auto Test Cable With Led Light For Diagnostic System $13.27 Was $16.59
Now$1327
current price Now $13.27, Was $16.59$16.59
Car Electric Circuit Tester,6-24V DC Automotive Electrical System Tester,Power Circuit Probe Tester,Dc Test Light Automotive Short Circuit Finder Auto Test Cable With Led Light For Diagnostic System
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.
5 out of 5 stars
AREALER P60 Automotive Circuit Tester Car Electrical System Short Tester 6-30V with Function LCD Display Flashlight Component Activation/Continuity Testing/Grounding Detection/Trace Locate Short C $24.73
$2473
current price $24.73AREALER P60 Automotive Circuit Tester Car Electrical System Short Tester 6-30V with Function LCD Display Flashlight Component Activation/Continuity Testing/Grounding Detection/Trace Locate Short C
Clearance All New 4 In 1 Tds Meter Digital Water Tester Accurate And Reliable TDS & Temp(°C °F) Meter 0 0 Testing For Drinking Water RO/DI System Aquariums Etc From $7.26
From$726
Clearance All New 4 In 1 Tds Meter Digital Water Tester Accurate And Reliable TDS & Temp(°C °F) Meter 0 0 Testing For Drinking Water RO/DI System Aquariums Etc
Treedix USB Cable Tester with 2.4" Color Screen for eMarker Reading, PD 3.0/3.1 Detection, Resistor and Continuity Check, Compatible with Lightning, Type-C, Micro-B 2.0/3.0, and Mini-B Cables $49.99
$4999
current price $49.99Treedix USB Cable Tester with 2.4" Color Screen for eMarker Reading, PD 3.0/3.1 Detection, Resistor and Continuity Check, Compatible with Lightning, Type-C, Micro-B 2.0/3.0, and Mini-B Cables
4 out of 5 stars
Car Tools Circuit Tester Automotive Electrical System Tester Power Circuit Probe for Short Circuit Finder 16ft Auto Test Light for $14.43
$1443
current price $14.43Car Tools Circuit Tester Automotive Electrical System Tester Power Circuit Probe for Short Circuit Finder 16ft Auto Test Light for
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 From $9.98
Sponsored
From$998
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
4.9 out of 5 stars
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
4.3 out of 5 stars
Tester Automotive Light Tester, 0.8-100V Car Digital LED Circuit Tester Vehicle Voltage Resistance Detector Pen Electrical System Test Tools $11.99
$1199
current price $11.99Tester Automotive Light Tester, 0.8-100V Car Digital LED Circuit Tester Vehicle Voltage Resistance Detector Pen Electrical System Test Tools
2026 All-New 4-in-1 TDS Meter: Test TDS, EC & Temp (C/F) with 0-9999 ppm Range. Accurate Digital Water Tester for Drinking Water, RO/DI Systems, Aquariums, Hydroponics. $9.04 Was $17.99
Now$904
current price Now $9.04, Was $17.99$17.99
2026 All-New 4-in-1 TDS Meter: Test TDS, EC & Temp (C/F) with 0-9999 ppm Range. Accurate Digital Water Tester for Drinking Water, RO/DI Systems, Aquariums, Hydroponics.
5 out of 5 stars
GODIAG GT101 Power Circuit Probe Tester, Auto Short Circuit, Relay Fuse / Voltage Tester, 6V 40V DC Auto Electrical System Test Tool Kit $49.98
$4998
current price $49.98GODIAG GT101 Power Circuit Probe Tester, Auto Short Circuit, Relay Fuse / Voltage Tester, 6V 40V DC Auto Electrical System Test Tool Kit
4.4 out of 5 stars
FeelGlad Water Quality Tester, Digital TDS Meter, EC Meter and Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Hydroponics, Ro System, Pool, Aquarium, Spa and Water Hardness $10.99
$1099
current price $10.99FeelGlad Water Quality Tester, Digital TDS Meter, EC Meter and Temperature Meter 3 in 1, 0-9990ppm, Ideal Water Test Meter for Hydroponics, Ro System, Pool, Aquarium, Spa and Water Hardness
5 out of 5 stars
Aiper HydroComm Pro Smart Pool Monitor for Scuba X1 Series, Digital Pool & Spa Water Tester for TDS, EC, pH, Temp & ORP $349.98 Was $379.98
Now$34998
current price Now $349.98, Was $379.98$379.98
Aiper HydroComm Pro Smart Pool Monitor for Scuba X1 Series, Digital Pool & Spa Water Tester for TDS, EC, pH, Temp & ORP
4.8 out of 5 stars
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 $5.10
$510
current price $5.102025 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
AUTOOL BT210 Automotive Power Circuit Probe Tester Fuse Tester 9V-30V DC Electrical System Voltage Tester for AV Ometer Multimeter Cars Truck Motorcycle $16.97
$1697
current price $16.97AUTOOL BT210 Automotive Power Circuit Probe Tester Fuse Tester 9V-30V DC Electrical System Voltage Tester for AV Ometer Multimeter Cars Truck Motorcycle
1 out of 5 stars
CoreLiving 4 in 1 Digital Water Tester and TDS Meter with EC & Temperature (C/F) Function, 0-9999 ppm Water Quality Test Kit for Drinking Water, RO/DI System, Aquariums and Hydroponics, 1 Tester $3.73 Was $4.16
Now$373
current price Now $3.73, Was $4.16$4.16
CoreLiving 4 in 1 Digital Water Tester and TDS Meter with EC & Temperature (C/F) Function, 0-9999 ppm Water Quality Test Kit for Drinking Water, RO/DI System, Aquariums and Hydroponics, 1 Tester
Adjustable Ignition System Coil Tester Coil Connection Plug Ignition Circuit Test $11.77
$1177
current price $11.77Adjustable Ignition System Coil Tester Coil Connection Plug Ignition Circuit Test
Porometisto VT01A Smart Automotive Circuit Tester, 0.8-100V DC Voltage Tester Pen, Electrical System Test Light with Continuity Buzzer & Flashlight for Car Truck Motorcycle Circuit Diagnosis $14.99 Was $18.99
Now$1499
current price Now $14.99, Was $18.99$18.99
Porometisto VT01A Smart Automotive Circuit Tester, 0.8-100V DC Voltage Tester Pen, Electrical System Test Light with Continuity Buzzer & Flashlight for Car Truck Motorcycle Circuit Diagnosis
Deally All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc $10.49
$1049
current price $10.49Deally All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
P60 Automotive Circuit Tester - Car Electrical System Short Tester with LCD Display, Flashlight, and Multiple Testing Functions $24.74
$2474
current price $24.74P60 Automotive Circuit Tester - Car Electrical System Short Tester with LCD Display, Flashlight, and Multiple Testing Functions
2 Pack TDS Digital Water Tester,Electronic Water Testers,Accurate and Reliable TDS EC & Temp(C,F) Meter,Water Test Meter for Drinking Water,RO/DI System and Aquariums,Blue(5.51x0.94")(Blue*2) $6.79 Was $7.69
Now$679
current price Now $6.79, Was $7.69$7.69
2 Pack TDS Digital Water Tester,Electronic Water Testers,Accurate and Reliable TDS EC & Temp(C,F) Meter,Water Test Meter for Drinking Water,RO/DI System and Aquariums,Blue(5.51x0.94")(Blue*2)
Unique Bargains DC 6V/12V/24V System Long Probe Continuity Test Light Car Voltage Circuit Tester $10.49 Was $11.99
Now$1049
current price Now $10.49, Was $11.99$11.99
Unique Bargains DC 6V/12V/24V System Long Probe Continuity Test Light Car Voltage Circuit Tester
Tanuke 2026 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc $5.89
$589
current price $5.89Tanuke 2026 All-New 4 in 1 Tds Meter Digital Water Tester - Accurate and Reliable TDS EC & Temp(C,F) Meter - 0-9999ppm - Professional Testing for Drinking Water, RO/DI System, Aquariums etc
TopDiag p50pro Automotive Circuit Tester Power Circuit Probe Tester 0-45V Mini Oscilloscope Car Electrical System Tester Signal AC DC LED Light Tester Diagnostic Tool with Flashlight 1.5m Cable Black $37.56
$3756
current price $37.56TopDiag p50pro Automotive Circuit Tester Power Circuit Probe Tester 0-45V Mini Oscilloscope Car Electrical System Tester Signal AC DC LED Light Tester Diagnostic Tool with Flashlight 1.5m Cable Black
Acaige Power Probe Circuit Tester 12V 24V Car Electric System Diagnostic Battery Tester $12.89
$1289
current price $12.89Acaige Power Probe Circuit Tester 12V 24V Car Electric System Diagnostic Battery Tester
Slaprin 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 $8.99
$899
current price $8.99Slaprin 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
4.8 out of 5 stars
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