Pool sensors and probes

500+ products

Tester of quality of water, monitor digital portable, tester of quality of water PH analysant the kit of test of pool of chlore (white) (1/4)

Tester of quality of water, monitor digital portable, tester of quality of water PH analysant the kit of test of pool of chlore (white) (2/4)

Tester of quality of water, monitor digital portable, tester of quality of water PH analysant the kit of test of pool of chlore (white) (3/4)

Tester of quality of water, monitor digital portable, tester of quality of water PH analysant the kit of test of pool of chlore (white)

~~£26.73~~

Free shipping

Battery-free red water quality detector (Related offer)--DTEKGAZ (1/3)

Battery-free red water quality detector (Related offer)--DTEKGAZ

~~£28.83~~

Free shipping

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water. (1/4)

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water. (2/4)

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water. (3/4)

Water Electrolysis Tester, Lightweight Portable Monitor for Evaluating the Quality of Electrolyzed Water.

~~£24.96~~

Free shipping

Tester of quality of the water, Tester of ph 2 in 1 digital Chlorine / CL2 meter Controller of control of the quality of the water Portable with Large screen for Spa of Pool (Gray White) (1/5)

Tester of quality of the water, Tester of ph 2 in 1 digital Chlorine / CL2 meter Controller of control of the quality of the water Portable with Large screen for Spa of Pool (Gray White)

~~£28.50~~

Free shipping

Tester of Chlorine and of ph CL2,Tester Digital LCD Multifunction,Tester of Level of Chlorine with Probe,For The Pool and The Spa (1/5)

Tester of Chlorine and of ph CL2,Tester Digital LCD Multifunction,Tester of Level of Chlorine with Probe,For The Pool and The Spa (2/5)

Tester of Chlorine and of ph CL2,Tester Digital LCD Multifunction,Tester of Level of Chlorine with Probe,For The Pool and The Spa (3/5)

Tester of Chlorine and of ph CL2,Tester Digital LCD Multifunction,Tester of Level of Chlorine with Probe,For The Pool and The Spa (4/5)

Tester of Chlorine and of ph CL2,Tester Digital LCD Multifunction,Tester of Level of Chlorine with Probe,For The Pool and The Spa

~~£28.50~~

Free shipping

New Analyseur of Quality of the Water 3 in 1 TDS EC Conductivity with Compensation of Temperature and Function of Backlight- (1/3)

New Analyseur of Quality of the Water 3 in 1 TDS EC Conductivity with Compensation of Temperature and Function of Backlight- (2/3)

New Analyseur of Quality of the Water 3 in 1 TDS EC Conductivity with Compensation of Temperature and Function of Backlight-

~~£29.11~~

Free shipping

Digital pH and TDS Meter Combo, 0.05 pH pH Tester with High Accuracy +/- 2% Reading Accuracy TDS Tester, Water Quality Tester for Drinking Water/Swimming Pool/Aquarium/ (1/4)

Digital pH and TDS Meter Combo, 0.05 pH pH Tester with High Accuracy +/- 2% Reading Accuracy TDS Tester, Water Quality Tester for Drinking Water/Swimming Pool/Aquarium/

~~£29.70~~

Free shipping

8-in-1 Electronic Pool pH Meter, PH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Pool, Spa, Aquarium, Drinking Water, Hydroponics (1/5)

8-in-1 Electronic Pool pH Meter, PH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Pool, Spa, Aquarium, Drinking Water, Hydroponics (2/5)

8-in-1 Electronic Pool pH Meter, PH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Pool, Spa, Aquarium, Drinking Water, Hydroponics (3/5)

8-in-1 Electronic Pool pH Meter, PH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Pool, Spa, Aquarium, Drinking Water, Hydroponics (4/5)

8-in-1 Electronic Pool pH Meter, PH/TDS/SALT/SG/ORP/EC/TEMP/H2 Tester, Water Quality Tester for Pool, Spa, Aquarium, Drinking Water, Hydroponics

~~£38.28~~

Free shipping

Portable Water Electrolyzer Water Quality Tester Water Impurity Monitor Electrolyzer Machine Test Meter (1/5)

Portable Water Electrolyzer Water Quality Tester Water Impurity Monitor Electrolyzer Machine Test Meter (2/5)

Portable Water Electrolyzer Water Quality Tester Water Impurity Monitor Electrolyzer Machine Test Meter (3/5)

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

~~£23.96~~

Free shipping

2 in 1 PC-102 Water Quality Tester, pH Tester for Swimming Pools, Spas, Chlorine and pH Meter, CL2 Measurement. (1/4)

2 in 1 PC-102 Water Quality Tester, pH Tester for Swimming Pools, Spas, Chlorine and pH Meter, CL2 Measurement. (2/4)

2 in 1 PC-102 Water Quality Tester, pH Tester for Swimming Pools, Spas, Chlorine and pH Meter, CL2 Measurement. (3/4)

2 in 1 PC-102 Water Quality Tester, pH Tester for Swimming Pools, Spas, Chlorine and pH Meter, CL2 Measurement.

~~£35.40~~

Free shipping

Digital pH Meter with Litmus Test Strip Function/Temperature, Multifunctional 0.01 High Precision Pool pH Tester, Water Quality Tester with ATC Function (1/5)

Digital pH Meter with Litmus Test Strip Function/Temperature, Multifunctional 0.01 High Precision Pool pH Tester, Water Quality Tester with ATC Function

~~£29.06~~

Free shipping

Precision Digital pH Tester: pH Meter for Swimming Pools with Simulation Strip Function, Waterproof Water Quality Tester, Auto Calibration for Swimming Pools and Aquariums (1/5)

Precision Digital pH Tester: pH Meter for Swimming Pools with Simulation Strip Function, Waterproof Water Quality Tester, Auto Calibration for Swimming Pools and Aquariums

~~£29.06~~

Free shipping

3-in-1 Digital Water Quality Tester, TDS, EC Meter and Temperature Meter - TDS Meter for Drinking Water, Hydroponics, Swimming Pools, Aquariums (1/5)

3-in-1 Digital Water Quality Tester, TDS, EC Meter and Temperature Meter - TDS Meter for Drinking Water, Hydroponics, Swimming Pools, Aquariums (2/5)

3-in-1 Digital Water Quality Tester, TDS, EC Meter and Temperature Meter - TDS Meter for Drinking Water, Hydroponics, Swimming Pools, Aquariums (3/5)

3-in-1 Digital Water Quality Tester, TDS, EC Meter and Temperature Meter - TDS Meter for Drinking Water, Hydroponics, Swimming Pools, Aquariums (4/5)

3-in-1 Digital Water Quality Tester, TDS, EC Meter and Temperature Meter - TDS Meter for Drinking Water, Hydroponics, Swimming Pools, Aquariums

Water Quality Tester Electrolyzer - Portable Water Impurity Monitor - Water Test Meter - Electrolyzer Machine (1/5)

Water Quality Tester Electrolyzer - Portable Water Impurity Monitor - Water Test Meter - Electrolyzer Machine (2/5)

Water Quality Tester Electrolyzer - Portable Water Impurity Monitor - Water Test Meter - Electrolyzer Machine (3/5)

Water Quality Tester Electrolyzer - Portable Water Impurity Monitor - Water Test Meter - Electrolyzer Machine (4/5)

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

PH Meter, 5 in 1 PH/TDS/EC/Salinity/Thermometer, LCD Display PH Tester, Automatic Temperature Compensation, Electronic PH Meter, Suitable for Drinking Water, Aquariums, Swimming Pool (1/5)

PH Meter, 5 in 1 PH/TDS/EC/Salinity/Thermometer, LCD Display PH Tester, Automatic Temperature Compensation, Electronic PH Meter, Suitable for Drinking Water, Aquariums, Swimming Pool

~~£35.58~~

Free shipping

Digital Portable PH Chlorine Tester Water Quality Tester Water Tester Chlorine Meter Pool Spa Water Quality Monitor Checker (1/5)

Digital Portable PH Chlorine Tester Water Quality Tester Water Tester Chlorine Meter Pool Spa Water Quality Monitor Checker (2/5)

Digital Portable PH Chlorine Tester Water Quality Tester Water Tester Chlorine Meter Pool Spa Water Quality Monitor Checker (3/5)

Digital Portable PH Chlorine Tester Water Quality Tester Water Tester Chlorine Meter Pool Spa Water Quality Monitor Checker (4/5)

Digital Portable PH Chlorine Tester Water Quality Tester Water Tester Chlorine Meter Pool Spa Water Quality Monitor Checker

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--DTEKGAZ (1/5)

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--DTEKGAZ (2/5)

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--DTEKGAZ (3/5)

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--DTEKGAZ

~~£28.98~~

Free shipping

$Tester pH Meter electronic, TDS&EC Meter Temperature, 3 in 1 Tester of quality of l\\'water with Screen LCD, Auto-Calibration, Test for Pool, Aquarium, Laboratory,etc. (1/5)$ $Tester pH Meter electronic, TDS&EC Meter Temperature, 3 in 1 Tester of quality of l\\'water with Screen LCD, Auto-Calibration, Test for Pool, Aquarium, Laboratory,etc. (2/5)$ $Tester pH Meter electronic, TDS&EC Meter Temperature, 3 in 1 Tester of quality of l\\'water with Screen LCD, Auto-Calibration, Test for Pool, Aquarium, Laboratory,etc. (3/5)$ $Tester pH Meter electronic, TDS&EC Meter Temperature, 3 in 1 Tester of quality of l\\'water with Screen LCD, Auto-Calibration, Test for Pool, Aquarium, Laboratory,etc. (4/5)$ $Tester pH Meter electronic, TDS&EC Meter Temperature, 3 in 1 Tester of quality of l\\'water with Screen LCD, Auto-Calibration, Test for Pool, Aquarium, Laboratory,etc. (5/5)$

Tester pH Meter electronic, TDS&EC Meter Temperature, 3 in 1 Tester of quality of l\\'water with Screen LCD, Auto-Calibration, Test for Pool, Aquarium, Laboratory,etc.

-50%

~~£30.38~~Lowest price 30d

Free shipping

2-in-1 Electronic pH Meter & TDS Meter Water Quality Tester TDS pH EC Temperature, Digital Tester with LCD Display Test for Swimming Pool, Aquarium

~~£32.38~~

Free shipping

TDS-3 Tester of quality of the water drinking Tester digital of temperature PPM Analyseur of pen for the water drinking, the cultivation hydroponique, the aquariums, the pools and the spas (1/5)

TDS-3 Tester of quality of the water drinking Tester digital of temperature PPM Analyseur of pen for the water drinking, the cultivation hydroponique, the aquariums, the pools and the spas

~~£31.10~~

Free shipping

Tester ph Meter, Eletorot Test of ph for Pools Charming TDS ph EC Temperature Tester of the water ph of Quality for water Drinking, Pool, Aquariums, Drinks, Hydroponie (1/5)

Tester ph Meter, Eletorot Test of ph for Pools Charming TDS ph EC Temperature Tester of the water ph of Quality for water Drinking, Pool, Aquariums, Drinks, Hydroponie

~~£31.44~~

Free shipping

Tester of ph, tester of ph of pool measurement TDS ph EC temperature quality of the water tester of ph for water drinking, pool, aquarium, drinks, cultivation hydroponique (1/5)

Tester of ph, tester of ph of pool measurement TDS ph EC temperature quality of the water tester of ph for water drinking, pool, aquarium, drinks, cultivation hydroponique

~~£32.66~~

Free shipping

Tester of ph, tester of ph of pool measurement TDS ph EC temperature quality of the water tester of ph for water drinking, pool, aquarium, drinks, cultivation hydroponique

~~£32.66~~

Free shipping

5-in-1 Electronic PH Meter Tester,Measures Ph & TDS & EC Salinity & TemperatureWater Quality Tester,LCD Display and Reading Accuracy,for Drinking Water, Aquariums, Swimming Pools etc. (1/5)

5-in-1 Electronic PH Meter Tester,Measures Ph & TDS & EC Salinity & TemperatureWater Quality Tester,LCD Display and Reading Accuracy,for Drinking Water, Aquariums, Swimming Pools etc.

~~£37.58~~

Free shipping

5-in-1 Electronic PH Meter Tester, Measures PH & TDS & EC Salinity & Temperature Water Quality Tester, LCD Display and Reading Accuracy, for Drinking Water, Aquariums, Swimming Pools etc.

~~£37.58~~

Free shipping

Pool Tester, PH Tester, PC-102B CL2 Chlorine and PH Tester, Electronic Water Tester, PH Meter Tester, PH and Chlorine Tester, Water Quality Analyzer with Probe, for Swimming Pool, Spa, Family (1/5)

Pool Tester, PH Tester, PC-102B CL2 Chlorine and PH Tester, Electronic Water Tester, PH Meter Tester, PH and Chlorine Tester, Water Quality Analyzer with Probe, for Swimming Pool, Spa, Family

~~£30.06~~

Free shipping

Battery-free TDS water quality detector (yellow)--BIEMMEDUE

~~£39.38~~

Free shipping

Tester of quality water for pool PC102 with detector of source hot and of chlore residuel for aquarium (1/5)

Tester of quality water for pool PC102 with detector of source hot and of chlore residuel for aquarium (2/5)

Tester of quality water for pool PC102 with detector of source hot and of chlore residuel for aquarium (3/5)

Tester of quality water for pool PC102 with detector of source hot and of chlore residuel for aquarium (4/5)

Tester of quality water for pool PC102 with detector of source hot and of chlore residuel for aquarium

~~£29.13~~

Free shipping

Water Quality Tester Electrolyzer-Portable Water Impurity Monitor Water Electrolyzer Machine Test Meter (1/5)

Water Quality Tester Electrolyzer-Portable Water Impurity Monitor Water Electrolyzer Machine Test Meter (2/5)

Water Quality Tester Electrolyzer-Portable Water Impurity Monitor Water Electrolyzer Machine Test Meter (3/5)

Water Quality Tester Electrolyzer-Portable Water Impurity Monitor Water Electrolyzer Machine Test Meter (4/5)

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

~~£32.89~~

Free shipping

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

~~£32.89~~

Free shipping

Automatic pH Tester, Chlorine pH Meter, Digital Water Analyzer, Specially for Swimming Pools, Spas, and Aquariums (1/5)

Automatic pH Tester, Chlorine pH Meter, Digital Water Analyzer, Specially for Swimming Pools, Spas, and Aquariums (2/5)

Automatic pH Tester, Chlorine pH Meter, Digital Water Analyzer, Specially for Swimming Pools, Spas, and Aquariums (3/5)

Automatic pH Tester, Chlorine pH Meter, Digital Water Analyzer, Specially for Swimming Pools, Spas, and Aquariums (4/5)

Automatic pH Tester, Chlorine pH Meter, Digital Water Analyzer, Specially for Swimming Pools, Spas, and Aquariums

~~£32.48~~

Free shipping

3-in-1 Blue Electrical Conductivity Meter, TDS-EC Measuring Pen for Water Quality Analysis ---DTEKGAZ (1/3)

3-in-1 Blue Electrical Conductivity Meter, TDS-EC Measuring Pen for Water Quality Analysis ---DTEKGAZ

~~£29.51~~

Free shipping

TDS test pen for home drinking water analysis – Accurate monitoring of drinking water – Battery not included--DTEKGAZ (1/3)

TDS test pen for home drinking water analysis – Accurate monitoring of drinking water – Battery not included--DTEKGAZ

~~£29.19~~

Free shipping

TDS-Tester, multifunctional digital Messgerät, professional Wasserqualitättester, Reinheitstester 0-9990 ppm, Bereichsmesser mit LCD-Bildschirm für Leitungswasser und Aquarien (1/5)

TDS-Tester, multifunctional digital Messgerät, professional Wasserqualitättester, Reinheitstester 0-9990 ppm, Bereichsmesser mit LCD-Bildschirm für Leitungswasser und Aquarien

~~£38.12~~

Free shipping

2-in-1 pH and Chlorine Tester – Pool Water Quality Analyzer – Accurate Measurement of pH and Chlorine Levels – Easy-to-Read LCD Screen (1/4)

2-in-1 pH and Chlorine Tester – Pool Water Quality Analyzer – Accurate Measurement of pH and Chlorine Levels – Easy-to-Read LCD Screen (2/4)

2-in-1 pH and Chlorine Tester – Pool Water Quality Analyzer – Accurate Measurement of pH and Chlorine Levels – Easy-to-Read LCD Screen (3/4)

2-in-1 pH and Chlorine Tester – Pool Water Quality Analyzer – Accurate Measurement of pH and Chlorine Levels – Easy-to-Read LCD Screen

~~£35.68~~

Free shipping

Digital pH and Chlorine Tester for Swimming Pools – High-Precision Water Analyzer – Large Display – Easy to Use for Spas and Aquariums (1/4)

Digital pH and Chlorine Tester for Swimming Pools – High-Precision Water Analyzer – Large Display – Easy to Use for Spas and Aquariums (2/4)

Digital pH and Chlorine Tester for Swimming Pools – High-Precision Water Analyzer – Large Display – Easy to Use for Spas and Aquariums (3/4)

Digital pH and Chlorine Tester for Swimming Pools – High-Precision Water Analyzer – Large Display – Easy to Use for Spas and Aquariums

~~£35.68~~

Free shipping

Battery-free TDS water quality detector (yellow)--DTEKGAZ

~~£29.03~~

Free shipping

Battery-free TDS water quality detector, white ---DTEKGAZ

~~£29.02~~

Free shipping

pH Meter, Eletorot 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool (1/5)

pH Meter, Eletorot 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool

~~£19.42~~

Free shipping

pH Meter, 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool (1/5)

pH Meter, 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool (2/5)

pH Meter, 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool (3/5)

pH Meter, 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool (4/5)

pH Meter, 4 in 1 Pool pH Tester Electronic PH Meter TDS Water Quality Meter and pH Test for Drinking Aquariums Hydroponics Swimming Pool

~~£19.42~~

Free shipping

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--BIEMMEDUE (1/5)

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--BIEMMEDUE (2/5)

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--BIEMMEDUE (3/5)

Battery-free blue TDS water quality tester – precise and reliable for regular water monitoring--BIEMMEDUE

~~£39.33~~

Free shipping

Tester of meter of chlore Ph 2 in 1 Pc-102 - Tester of chlore Ph Cl2 - Measures of the device of test of quality of water of pool - New tester of quality of water of pool (1/5)

Tester of meter of chlore Ph 2 in 1 Pc-102 - Tester of chlore Ph Cl2 - Measures of the device of test of quality of water of pool - New tester of quality of water of pool

~~£29.94~~

Free shipping

3-in-1 TDS pen for pets, EC conductivity analyzer, home water quality tester, high-precision digital display--BIEMMEDUE (1/4)

3-in-1 TDS pen for pets, EC conductivity analyzer, home water quality tester, high-precision digital display--BIEMMEDUE (2/4)

3-in-1 TDS pen for pets, EC conductivity analyzer, home water quality tester, high-precision digital display--BIEMMEDUE

~~£39.26~~

Free shipping

Multifunctional water quality meter measures TDS, electrical conductivity and temperature – three in one device with backlight. (1/3)

Multifunctional water quality meter measures TDS, electrical conductivity and temperature – three in one device with backlight.

~~£24.92~~

Free shipping

Tester digital of quality of the water, meter TDS, high precision, Kit of test Portable with retro-lighting (1/5)

Tester digital of quality of the water, meter TDS, high precision, Kit of test Portable with retro-lighting (2/5)

Tester digital of quality of the water, meter TDS, high precision, Kit of test Portable with retro-lighting (3/5)

Tester digital of quality of the water, meter TDS, high precision, Kit of test Portable with retro-lighting (4/5)

Tester digital of quality of the water, meter TDS, high precision, Kit of test Portable with retro-lighting

-50%

~~£33.33~~Lowest price 30d

Free shipping

Tester digital of quality of the water, meter TDS, high precision, Kit of test Portable with retro-lighting

-50%

~~£33.33~~Lowest price 30d

Free shipping

Battery-free TDS water quality detector, white ---BIEMMEDUE

~~£39.37~~

Free shipping

Battery-free red water quality detector (Related offer)--BIEMMEDUE (1/3)

Battery-free red water quality detector (Related offer)--BIEMMEDUE

~~£39.18~~

Free shipping

Chlorine and pH CL2 Tester with Probe, Swimming Pool Water Quality Analyzer, Replacement Accessory for Swimming Pool pH Tester, Cl Tester, Electronic Swimming Pool pH and CH Tester (1/5)

Chlorine and pH CL2 Tester with Probe, Swimming Pool Water Quality Analyzer, Replacement Accessory for Swimming Pool pH Tester, Cl Tester, Electronic Swimming Pool pH and CH Tester

~~£39.58~~

Free shipping