KEYESTUDIO 45 Sensors Starter Kit For BBC Microbit V2.2 V2 V1.5 (Without Micro:Bit), Sensor Breakout Board, I2c LCD, Buzzer, 5V Relay With Tutorials

Ph0-14 Value Detect Sensor Module + Ph Electrode Probe Bnc For Arduino

Apera Instruments 201T-F All-In-One Ph Electrode, ATC, BNC/RCA Connector, Polycarbonate Body AI1302

LACHOI Ph Meter With ATC Digital PH Tester Pen With Backlight 0.01 High Accuracy Waterproof Ph Tester Kit PH Pen Meter Temp/Water Tester For

5 Pack Flexible Sensing Resistors With Female Contact And Housing, Thin Film Pressure Sensor Compatible With Arduino Or Microbit DIY Kit, 0.5 Inch

APERA INSTRUMENTS AI209 Value Series PH20 Waterproof Ph Tester Kit, ±0.1 Ph Accuracy

Bluelab Guardian Monitor Wi-Fi For Real-Time Ph, Temperature, And Conductivity (TDS) Measurements In Water With Calibration, 3 in 1 Digital Nutrient

DIGITEN 4 Digital Red LED Tachometer RPM Speed Meter + Hall Proximity Switch Magnet Sensor NPN For Lathe Conveyor Belt

Apera Instruments PH400 Portable Ph Meter Kit With Pre-Mixed Buffers, 0.01 Ph Accuracy, 0-14.00 Ph Measuring Range, 3-Point Auto Calibration, 3'

Phydrion - 5920024 Phydrion 0 To 13 Ph Jumbo Ph Papers, Range 0 To 13, 50 Ft/Roll

4-In-1 Soil Moisture Meter Digital PH Meter/Soil Moisture/Plant Temperature/Sunlight Intensity, Backlight LCD Display, Soil Test Meter For Garden,

Extech 6015WC Waterproof Ph Electrode With Cable For Extech Model PH220-C

Digital Ph Meter Tester Pen With 3 Calibration Powders, 0.01 Accuracy, Pocket Size, LCD Display For Household Drinking, Pool And Aquarium

VIVOSUN Digital Ph And TDS Meter Kits, 0.01Ph High Accuracy Pen Type Ph Meter ± 2% Readout Accuracy 3-In-1 TDS EC Temperature Meter For Hydroponics,