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All AgricultureAll Industrial3D PrintersAcuRiteAgricultural Structures & HardwareAir Quality & Gas AnalyzersBarometersCalibrationChemicalsCommercial Refrigerators & Commercial FreezersData RecordersElectrical TestingElectronic & Bench TestingFacility SafetyForklift PartsHealthcare EssentialsHobartHumidity MonitorsInspection & Analysis ToolsMedical BagsMedical SafetyMicroscope AccessoriesMicroscopesMotion, Speed, Force MeasurementMSANetwork and Cable TestersOxygen ConcentratorsPatient CarePersonal Care ProductsPH and ThermometersPoultry CarePressure & VacuumRestroom FixturesSafety Signs, Tapes, & MarkersScalesSurface TestingTemperature & HumidityWaste ManagementWater Quality & InstrumentationWeather StationsWeight, Sound, and Light MeasurementWind Speed Gauges
Sensor Test(240)
Uses item details. Price when purchased online
Elitech Infrared Refrigerant Leak Detector HVAC Halogen Tester Gas Selectable $245.00
Sponsored
$24500
current price $245.00Elitech Infrared Refrigerant Leak Detector HVAC Halogen Tester Gas Selectable
KAISAL Automotive Vacuum Gauge, 101kPa Digital Vacuum Meter Pressure Leak Tester, Engine Intake Exhaust Diagnostic Tool, 12V Car Powered $25.99
Sponsored
$2599
current price $25.99KAISAL Automotive Vacuum Gauge, 101kPa Digital Vacuum Meter Pressure Leak Tester, Engine Intake Exhaust Diagnostic Tool, 12V Car Powered
Upgraded MLX90640 Infrared Thermal Imager, High-Resolution Portable Thermal Sensor, Non-Contact Temperature Tester, Built-in Rechargeable Battery $78.00
$7800
current price $78.00Upgraded MLX90640 Infrared Thermal Imager, High-Resolution Portable Thermal Sensor, Non-Contact Temperature Tester, Built-in Rechargeable Battery
4.3 out of 5 stars
Professional Food PH Meter High Accuracy Sensor Temp Acidity Tester for Brewing Cheese Meat Canning Dough Soil PH Meter $23.66
$2366
current price $23.66Professional Food PH Meter High Accuracy Sensor Temp Acidity Tester for Brewing Cheese Meat Canning Dough Soil PH Meter
3.8 out of 5 stars
TESMEN 3-in-1 EMF Meter, EMF Radiation Detector and Electromagnetic Field Reader with LCD Screen, Alarm and Backlight, Portable Meter for Home and Office $39.99
$3999
current price $39.99TESMEN 3-in-1 EMF Meter, EMF Radiation Detector and Electromagnetic Field Reader with LCD Screen, Alarm and Backlight, Portable Meter for Home and Office
4.4 out of 5 stars
Best seller, Hyper Tough Circuit Tester $8.82
Best seller
$882
current price $8.82Hyper Tough Circuit Tester
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 $11.59
Best seller
$1159
current price $11.59TDS 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
4.2 out of 5 stars
GQ EMF-360 Multi-Field EMF Meter, 3-in-1 Ghost Detector, RF Sensor $68.00
$6800
current price $68.00GQ EMF-360 Multi-Field EMF Meter, 3-in-1 Ghost Detector, RF Sensor
5 out of 5 stars
X-Sense Radon Gas Detector Monitor for Home, Continuous & Real-Time Testing with Easy-to-Read LCD Display, No Installation or Lab Fees, XR0A-SR From $53.98
From$5398
X-Sense Radon Gas Detector Monitor for Home, Continuous & Real-Time Testing with Easy-to-Read LCD Display, No Installation or Lab Fees, XR0A-SR
4.7 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
Asunby 3-in-1 Water Quality Tester TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems $10.99 Was $19.99
Now$1099
current price Now $10.99, Was $19.99$19.99
Asunby 3-in-1 Water Quality Tester TDS Meter, EC & Temperature Monitor | 0-9990ppm Accuracy | for Drinking Water, Aquariums, Pools & RO Systems
4.4 out of 5 stars
Best seller, Hyper Tough Outlet & GFCI Tester $9.97
Best seller
$997
current price $9.97Hyper Tough Outlet & GFCI Tester
4.5 out of 5 stars
6-in-1 Combustible Gas Detector,6 in 1 CO Smoke Combustible Alarm ,High-Precision Sensor for Home,RV,Camping & Car Travel From $32.66
From$3266
6-in-1 Combustible Gas Detector,6 in 1 CO Smoke Combustible Alarm ,High-Precision Sensor for Home,RV,Camping & Car Travel
Hyper Tough Digital Outlet & GFCI Tester with LCD Screen, No Batteries Required $19.97
$1997
current price $19.97Hyper Tough Digital Outlet & GFCI Tester with LCD Screen, No Batteries Required
4.3 out of 5 stars
SMART SENSOR ST1393 EMF Meter Electromagnetic Field EMF Detector Handheld Digital LCD Electromagnetic Field Radiation Tester $20.99
$2099
current price $20.99SMART SENSOR ST1393 EMF Meter Electromagnetic Field EMF Detector Handheld Digital LCD Electromagnetic Field Radiation Tester
4.4 out of 5 stars
AIRKNIGHT 9-In-1 Indoor Air Quality Monitor Indoor Portable CO2 Monitor, VOC Sensor, Formaldehyde Detector, AQI, PM2.5 + 4 More Home Monitoring, Air Quality Tester Confined Space Clean Air Monitor $121.49
$12149
current price $121.49AIRKNIGHT 9-In-1 Indoor Air Quality Monitor Indoor Portable CO2 Monitor, VOC Sensor, Formaldehyde Detector, AQI, PM2.5 + 4 More Home Monitoring, Air Quality Tester Confined Space Clean Air Monitor
4.1 out of 5 stars
Hyper Tough Circuit Breaker Locator with Auto-Sensing Receiver, 90120V AC $34.97
$3497
current price $34.97Hyper Tough Circuit Breaker Locator with Auto-Sensing Receiver, 90120V AC
4.4 out of 5 stars
Best seller, 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 From $10.97
Best seller
2 options
Available in additional 2 optionsFrom$1097
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
4.8 out of 5 stars
Clearance, Zero Water Tester,Drinking Water Tester,Tds Water Tester,0-9990 Ppm Meter Water Quality Tester,Portable Water Tester for Drinking Water,Tds Meter Digital Water Tester,1 Pack — LAILLSH 2026 New From $3.13
Clearance
From$313
Zero Water Tester,Drinking Water Tester,Tds Water Tester,0-9990 Ppm Meter Water Quality Tester,Portable Water Tester for Drinking Water,Tds Meter Digital Water Tester,1 Pack — LAILLSH 2026 New
4.5 out of 5 stars
6-in-1 Combustible Gas Detector,6 in 1 CO Smoke Combustible Alarm with 2.8" Rotatable HD Screen,85dB Alarm,High-Precision Sensor for Home,RV,Camping & Car Travel From $32.33
From$3233
6-in-1 Combustible Gas Detector,6 in 1 CO Smoke Combustible Alarm with 2.8" Rotatable HD Screen,85dB Alarm,High-Precision Sensor for Home,RV,Camping & Car Travel
Performance Tool W2979 Cordless Circuit Tester (3 to 28 Volt) Safe with ECM's, Sensors, Transducers and More Black $21.45 $21.45/count
$2145
current price $21.45$21.45/count
Performance Tool W2979 Cordless Circuit Tester (3 to 28 Volt) Safe with ECM's, Sensors, Transducers and More Black
5 out of 5 stars
TDS Meter, Electronic Water Tester with 0-9990 PPM Measurement Range,Digital Water Test Pen for Farming, Aquariums,Pools $8.22 Was $9.20
Now$822
current price Now $8.22, Was $9.20$9.20
TDS Meter, Electronic Water Tester with 0-9990 PPM Measurement Range,Digital Water Test Pen for Farming, Aquariums,Pools
4.7 out of 5 stars
Temtop M10+ Indoor Air Quality Monitor, 6-in-1 CO2, PM2.5, VOC Detection, Smart Temperature & Humidity Sensor, with App Connectivity for Home Air Quality Testing & Analysis $129.99
$12999
current price $129.99Temtop M10+ Indoor Air Quality Monitor, 6-in-1 CO2, PM2.5, VOC Detection, Smart Temperature & Humidity Sensor, with App Connectivity for Home Air Quality Testing & Analysis
5 out of 5 stars
AUTOOL TM101 Digital Thermohygrometer Indoor Thermometer & Hygrometer Temperature Humidity Meter Sensor Monitor Tester for Home Greenhouse Baby Room Office
4 options
Available in additional 4 optionsAUTOOL TM101 Digital Thermohygrometer Indoor Thermometer & Hygrometer Temperature Humidity Meter Sensor Monitor Tester for Home Greenhouse Baby Room Office
5 out of 5 stars
9 in 1 Air Quality Monitor Indoor Outdoor PM2.5, PM1.0, PM10, HCHO, Detector Tester Temperature and Humidity Sensor $58.47
$5847
current price $58.479 in 1 Air Quality Monitor Indoor Outdoor PM2.5, PM1.0, PM10, HCHO, Detector Tester Temperature and Humidity Sensor
Rapid RH L6 Smart Sensors 50 Pack with Total Reader and Insertion Tool, ASTM F2170 Concrete RH Testing Kit, Fahrenheit $2,449.00
$2,44900
current price $2,449.00Rapid RH L6 Smart Sensors 50 Pack with Total Reader and Insertion Tool, ASTM F2170 Concrete RH Testing Kit, Fahrenheit
New Arrivals Professional Food PH Meter High Accuracy Sensor Temp Acidity Tester for Brewing Cheese Meat Canning Dough Soil $24.98
$2498
current price $24.98New Arrivals Professional Food PH Meter High Accuracy Sensor Temp Acidity Tester for Brewing Cheese Meat Canning Dough Soil
SMART SENSOR Decibel Tester LCD Display Noise Meter for Various Environments $17.65
$1765
current price $17.65SMART SENSOR Decibel Tester LCD Display Noise Meter for Various Environments
10-in-1 Air Quality Monitor Indoor Pollution Detector, Formaldehyde PM2.5 Temp Humidity Tester, Radon CO2 Meter for Home Office, Air Quality Sensor $17.23
$1723
current price $17.2310-in-1 Air Quality Monitor Indoor Pollution Detector, Formaldehyde PM2.5 Temp Humidity Tester, Radon CO2 Meter for Home Office, Air Quality Sensor
1 out of 5 stars
iSpring 3-Button Digital TDS Water Quality Test Meter Kit with Temperature Calibration, 0.11 lb $15.99
$1599
current price $15.99iSpring 3-Button Digital TDS Water Quality Test Meter Kit with Temperature Calibration, 0.11 lb
4.3 out of 5 stars
RS485 Communication Multi-Function Water Quality Tester Monitor PH ORP TDS EC CF mp Humidity Meter ,Pocket Size Sensor $167.60
$16760
current price $167.60RS485 Communication Multi-Function Water Quality Tester Monitor PH ORP TDS EC CF mp Humidity Meter ,Pocket Size Sensor
Detektor SMART SENSOR Handheld Mini Digital LCD EMF Tester Electromagnetic Field Radiation Detector Meter Dosimeter Tester Counter $16.69
$1669
current price $16.69Detektor SMART SENSOR Handheld Mini Digital LCD EMF Tester Electromagnetic Field Radiation Detector Meter Dosimeter Tester Counter
Mini LCD Digital Thermometer Hygrometer Temperature Sensor Humidity Meter Humidity Meter Gauge Tester Measuring Tools Accessory
Mini LCD Digital Thermometer Hygrometer Temperature Sensor Humidity Meter Humidity Meter Gauge Tester Measuring Tools Accessory
VORALYN TDS-3 Handheld TDS Meter with Carrying Case, 0-999 ppm TDS Measurement Range, 1 ppm Resolution, 5% Readout Accuracy $10.45
$1045
current price $10.45VORALYN TDS-3 Handheld TDS Meter with Carrying Case, 0-999 ppm TDS Measurement Range, 1 ppm Resolution, 5% Readout Accuracy
PH Meter, TDS PPM Meter, 4-in-1 Soil PH Tester, PH/EC Digital Kit, 3 Pack for Home Water, Hydroponics, Botanical Garden Soil and Aquarium Use $20.69
$2069
current price $20.69PH Meter, TDS PPM Meter, 4-in-1 Soil PH Tester, PH/EC Digital Kit, 3 Pack for Home Water, Hydroponics, Botanical Garden Soil and Aquarium Use
3.6 out of 5 stars
Car LED Digital Display Multi-Function Sensor, Circuit Test Tool, Wire Fuse Socket Voltage Continuity Test Pen, Universal $6.99
$699
current price $6.99Car LED Digital Display Multi-Function Sensor, Circuit Test Tool, Wire Fuse Socket Voltage Continuity Test Pen, Universal
Portable TDS Water Tester, 0-9990 PPM Range, 2 Second Readout, Blue $9.89
$989
current price $9.89Portable TDS Water Tester, 0-9990 PPM Range, 2 Second Readout, Blue
GM328 Transistor Tester ESR Meter, Automatic Resistance Component Detector $33.34
$3334
current price $33.34GM328 Transistor Tester ESR Meter, Automatic Resistance Component Detector
VIVOSUN Digital pH Meter, 3-in-1 TDS/EC/Temperature Meter, 3-in-1 Soil Moisture/pH/Light Tester Combo for Home, Garden and Hydroponics $26.59
$2659
current price $26.59VIVOSUN Digital pH Meter, 3-in-1 TDS/EC/Temperature Meter, 3-in-1 Soil Moisture/pH/Light Tester Combo for Home, Garden and Hydroponics
4.9 out of 5 stars
Detektor SMART SENSOR Handheld Mini Digital LCD EMF Tester Electromagnetic Field Radiation Detector Meter Dosimeter Tester Counter $17.72
$1772
current price $17.72Detektor SMART SENSOR Handheld Mini Digital LCD EMF Tester Electromagnetic Field Radiation Detector Meter Dosimeter Tester Counter
Digital Dual Channel Thermometer With 2 K-Type Thermocouple Sensor Tester $19.99
$1999
current price $19.99Digital Dual Channel Thermometer With 2 K-Type Thermocouple Sensor Tester
NEIKO 20713A Digital Tachometer, Noncontact Laser Photo Sensor with 2.5 to 99,999 RPM Accuracy, RPM Gauge Marker with Batteries Included $19.95 Was $23.99
Now$1995
current price Now $19.95, Was $23.99$23.99
NEIKO 20713A Digital Tachometer, Noncontact Laser Photo Sensor with 2.5 to 99,999 RPM Accuracy, RPM Gauge Marker with Batteries Included
4.5 out of 5 stars
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