Pool sensors and probes

7 in 1 Water Quality Tester Digital PH EC TDS Hydrogen ORP Salinity Temp Meter with Backlit Display Multi Purpose

8-in-1 electronic pH tester for swimming pools, spas, aquariums, drinking water and hydroponics: measure pH, TDS, salt, density, ORP, electrical conductivity, temperature and hydrogen.

5-in-1 Electronic pH Meter – Measures pH, TDS, EC, salinity, temperature – LCD backlight – 0.01 accuracy for aquariums and spas

[NEVER USED] Water Quality Test Meter TDS PH EC Temperature 4-in-1 Set Digital Tester with LCD Display Test for Swimming Pool, Aquarium

[NEVER USED] 4-in-1 Electronic pH Meter for Swimming Pools, pH, TDS, and Temperature, with LCD Screen, for Drinking Water, Aquariums, Hydroponics, and Swimming Pools

8-in-1 electronic pH meter for swimming pools, pH/TDS/salt/SG/ORP/EC/temperature/H2 tester, water quality tester for swimming pools, spas, aquariums, drinking water and hydroponics

Electronic pH Meter Tester, 5-in-1 Pool Water Tester with Backlight, pH/TDS/EC/Salinity/Temperature Meter with ATC, High Precision pH Meter with 0.01 Resolution, for Drinking Water, Aquarium, Spas

5-in-1 Electronic pH Meter Tester, Measures pH, TDS, EC, Salinity, and Temperature, Water Quality Tester, LCD Screen and Accurate Readings, for Drinking Water, Aquariums, Swimming Pools, etc. - LIAIKI

pH & Cl2 Test 2 in 1 Electronic Digital SPA Water Quality Tester, Residual Chlorine Analysis Detector Monitor - LIAIKI

5-in-1 Electronic pH Meter – Measures pH, TDS, EC, salinity, temperature – LCD backlight – 0.01 accuracy for aquariums and spas

Electronic 5-in-1 pH meter – Measures pH, TDS, EC, salinity and temperature – LCD display with precise readings – Suitable for drinking water, aquariums, swimming pools, etc. – Color B

Pool Salt Tester and PH Meter, Digital Salinity Meter and PH Tester for Swimming Pool Saltwater and Drinking Water, 5 in 1 Salinity PH Temp EC and TDS Meter Pool Spas, High Accuracy

Water Consumption Test Device, Green

Electronic PH Tester, 5 in 1 Swimming Pool Water Tester with Backlight, PH/TDS/EC/Salinity/Temperature with ATC, High Precision PH Meter with Resolution 0.01 for Drinking Water, Aquarium, Spas

Swimming pool water pH residual chlorine tester, pH value and chlorine content, quick measurement of water quality to start the hot summer

6 in 1 Portable Water Quality Detector Water Quality Testing Meter TDS COD TOC UV275 EC TEMP Meter

Portable pH and Chlorine Level Tester, 2-in-1 Water Quality Analysis Instrument

[NEVER USED] Water Electrolyzer Test Electrolysis Water Tools Water Purity Level Meter Water Quality Tester Sight

Multifunctional water quality meter with backlight – pH, TDS, EC, salinity, temperature – No batteries or powder test kits required

7-in-1 water quality tester for aquariums and seawater: pH value, electrical conductivity, total solids, specific gravity, salinity, redox potential

3-in-1 water quality meter for precise measurement of pH, EC and temperature for aquariums, pools and gardens--DTEKGAZ

Portable water quality meter for swimming pools – Measures chlorine and pH levels – Accurate and reliable – Battery not included--DTEKGAZ

4-in-1 Bluetooth Water Quality Tester: pH value, electrical conductivity, total solids content, temperature – No battery or test kit required--DTEKGAZ

7-in-1 water quality tester for aquariums and seawater: pH value, electrical conductivity, total solids, specific gravity, salinity, redox potential--DTEKGAZ

Portable 3-in-1 water quality meter with pH and ORP thermometer for aquaculture and drinking water--DTEKGAZ

TDS tester 98306 for water quality analysis in aquaculture and horticulture – CE, FCC and RoHS certified – battery not included--DTEKGAZ

4-in-1 Water Quality Tester: pH, TDS, EC, Temperature with Backlight, Battery-Free--DTEKGAZ

3-in-1 water quality tester with Bluetooth function, TDS and pH temperature measurement, backlit display, precise pH and solubility measurement--DTEKGAZ

PC-102B CL2 Professional Chlorine and pH Analyzer with Probe Water Quality Analyzer for Swimming Pools and Spas

5-in-1 High Precision Salt Water Salinity Tester, IP67 Waterproof Test Kit YMYNY

Electronic pH Tester, 5-in-1 Pool Water Quality Tester with Backlight, PH/TDS/EC/Salinity/Temperature with ATC, 0.01 Resolution for Drinking Water, Aquarium, Spa YMYNY

CT3081 Portable Digital Salinometer Salinity Temperature Humidity Tester Meter for Salt Water Pool

Portable digital LCD drinking water meter TDS-3, water quality tester with temperature and PPM measurement, water purity tester 0-9990 PPM, suitable for drinking water and hydroponic cultivation (PPM

Portable Water Electrolyzer Water Quality Tester Water Impurity Monitor Electrolyzer Machine Test Meter

[NEVER USED] Digital pH Meter Tester, 0.01 Resolution 0-14 pH, 4-in-1 TDS EC Temperature Meter, Water Quality Tester with Backlit LCD, Automatic Calibration, Drinking Water Pool Test-A

[NEVER USED] PH Meter Tester, 4-in-1 Electronic Swimming Pool PH Tester, PH TDS EC and Temperature Meter, Water Quality Tester with LCD Display and Reading Accuracy, for Swimming Pool, Aquarium

PH EC Temperature Meter DC 6V High Accuracy Portable LCD Hydroponic Monitor Multifunctional TesterUK Plug 220V

Testeur d'Électrolyse de l'Eau, Moniteur Portable Léger pour Évaluer la Qualité de l'Eau Électrolysée.

TDS‑8426 2 in 1 TDS Temperature Tester Portable Water Quality Analyzer for Swimming Pool Aquarium Hydroponics

PH Tester 4 in 1 Portable Automatic Recognition Temperature Compensation Accurate Widely Used EC Meter for PH EC SALT

Electronic pool water quality tester for pH and chlorine levels, 13 cm cable

Digital salinity tester, high precision, wide temperature range, large LCD screen, water quality tester for EC Temp SG

Portable swimming pool water tester, pH detector, chlorine detector, water quality test monitor

[NEVER USED] 3-in-1 TDS Tester, pH Tester, Swimming Pool Water Quality Test, Conductivity Meter with High-Precision LCD Display and Automatic Calibration Function

[NEVER USED] PH Meter, PH Tester for Swimming Pools, 4-in-1 PH Meter, Electronic TDS Meter, Water Quality and pH Test for Drinking Aquariums, Hydroponics, Swimming Pools

[NEVER USED] PH Meter, PH Tester for Swimming Pools, 4-in-1 PH Meter, Electronic TDS Meter, Water Quality and pH Test for Drinking Aquariums, Hydroponics, Swimming Pools

(Blue)Water Quality Test Meter TDS PH EC Temperature 4 in 1 Set Digital Tester with LCD Display Test for Swimming Pool, Aquarium

4-in-1 Electronic pH Meter, Water Quality Tester pH/TDS/EC/Temperature, Measurement Accuracy 0-14 pH, 2% Reading Accuracy, Set 0-19999 PPM, for Swimming Pool, Aquarium, Drinking Water - LIAIKI

SMART SENSOR Digital Salinity Meter with Color Screen Display 0.00ppt-9.99ppt 10.0ppt-50ppt Seawater Pool Aquarium Fish Multifunction Salinity Gauge Electronic Waterproof Refractometer with ATC and Re

Electronic pool water tester for pH and chlorine content, 13 cm cable YMYNY

Water Quality Tester pH/TDS/Salt/SG/Temperature Online APP Monitoring WiFi Tester for Aquarium Hydroponics Swimming Pool Aquaculture Pools with Easy Calibration

[NEVER USED] Electronic pH Meter, 5-in-1 Pool Water Tester with Backlight, pH/TDS/EC/Salinity/Temperature with ATC, High Precision pH Meter

5-in-1 Digital Water Quality Tester pH/TDS/EC/Temperature - For Swimming Pools, Drinking Water, Aquariums

Electronic pH Meter, 5-in-1 Pool Water Tester with Backlight, pH/TDS/EC/Salinity/Temperature with ATC, High Precision pH Meter

2-in-1 chlorine pH tester, chlorine water quality analyzer, CL2 measuring device.

Water Test Strip PH Value Total Hardness Test Strip Pool Test Strip for Aquarium Pond 2 in 1