{"product_id":"ph-electrode-probe-analog-sensor-module-arduino-esp32","title":"pH Electrode Probe with Analog Sensor Module - Liquid pH Detection for Arduino and ESP32","description":"\u003ch2 style=\"text-align:center;\"\u003epH Electrode Probe with Analog Sensor Module - Liquid pH Detection for Arduino and ESP32\u003c\/h2\u003e\u003cp style=\"text-align:center;\"\u003eMeasure the pH value of water, nutrient solutions, hydroponics, aquarium water, and other liquids with this complete pH sensing kit. Includes a glass pH electrode probe with BNC connector cable and a green analog signal conditioning PCB that amplifies and conditions the weak electrode signal into a stable 0-5V analog voltage readable by any Arduino, ESP32, or microcontroller ADC input. Two onboard trimpots allow offset and gain calibration for accurate pH readings.\u003c\/p\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6Mzc1MzY4MDczMCwicHVyIjoiYmxvYl9pZCJ9fQ==--9132b9ac26caca07c270cd369a6c3a8c806428ad\/WhatsApp_Image_2026-09-15_at_7.05.15_PM_1.jpeg\" alt=\"pH electrode probe and analog sensor module with BNC connector cable and green signal conditioning PCB\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003eWhat is Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e1x Glass pH electrode probe with protective cap\u003c\/li\u003e\n\u003cli\u003e1x BNC connector cable (probe to module)\u003c\/li\u003e\n\u003cli\u003e1x pH analog signal conditioning PCB module (green)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGlass pH electrode probe - accurate pH measurement across pH 0-14 range\u003c\/li\u003e\n\u003cli\u003eBNC connector - standard laboratory-grade probe connection to the module\u003c\/li\u003e\n\u003cli\u003eDual op-amp signal conditioning - amplifies the weak millivolt electrode signal reliably\u003c\/li\u003e\n\u003cli\u003eTwo calibration trimpots - offset and gain adjustment for precise pH calibration\u003c\/li\u003e\n\u003cli\u003eAnalog voltage output (0-5V) - directly readable by Arduino, ESP32, and any ADC\u003c\/li\u003e\n\u003cli\u003e5-pin header output - VCC, GND, TO (analog out), DO (digital out), LED\u003c\/li\u003e\n\u003cli\u003eCompact green PCB - easy to mount in project enclosures\u003c\/li\u003e\n\u003cli\u003eCompatible with pH 4.0 and pH 7.0 buffer calibration solutions (not included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6Mzc1MzY4MDY5MSwicHVyIjoiYmxvYl9pZCJ9fQ==--aad63ab90df548694e9c4a6c4648675c11a09e7c\/WhatsApp_Image_2026-09-15_at_7.05.15_PM_2.jpeg\" alt=\"pH sensor module close-up showing BNC socket dual trimpots op-amp ICs and 5-pin header on green PCB\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Range:\u003c\/strong\u003e pH 0 - 14\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Type:\u003c\/strong\u003e Glass pH electrode\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe Connector:\u003c\/strong\u003e BNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Supply Voltage:\u003c\/strong\u003e 5V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output:\u003c\/strong\u003e 0 - 5V (proportional to pH)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Header:\u003c\/strong\u003e 5-pin 2.54mm (VCC, GND, TO, DO, LED)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Two trimpots (offset and gain)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePCB Color:\u003c\/strong\u003e Green\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalibration Solutions Required:\u003c\/strong\u003e pH 4.0 and pH 7.0 buffer (not included)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6Mzc1MzY4MDcxMywicHVyIjoiYmxvYl9pZCJ9fQ==--31bdc9db22670d4d050adb9e174b4bbf4f1c4ea7\/WhatsApp_Image_2026-09-15_at_7.05.16_PM_1.jpeg\" alt=\"pH electrode probe and sensor module showing probe with protective cap BNC cable and PCB with label PH Electrode Probe\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003eHow to Calibrate\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSubmerge the probe in pH 7.0 buffer solution and adjust the offset trimpot until the output reads the correct voltage for pH 7\u003c\/li\u003e\n\u003cli\u003eThen submerge in pH 4.0 buffer and adjust the gain trimpot to set the correct slope\u003c\/li\u003e\n\u003cli\u003eMap the output voltage to pH value in your Arduino or ESP32 code using the two-point calibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cimg src=\"https:\/\/sidekick.shopify.ai\/rails\/active_storage\/blobs\/redirect\/eyJfcmFpbHMiOnsiZGF0YSI6Mzc1MzY4MDY4MSwicHVyIjoiYmxvYl9pZCJ9fQ==--1d4e83ac1da0a1cde774517abe614c8e492da0be\/WhatsApp_Image_2026-09-15_at_7.05.16_PM.jpeg\" alt=\"pH electrode probe full view showing glass probe tip protective cap and BNC cable connected to sensor module\" style=\"max-width:100%;height:auto;border-radius:8px;\"\u003e\u003c\/p\u003e\u003ch3\u003ePerfect For\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHydroponics and Aquaponics pH Monitoring\u003c\/li\u003e\n\u003cli\u003eAquarium and Fish Tank Water Quality Monitoring\u003c\/li\u003e\n\u003cli\u003eArduino and ESP32 Water Quality Sensor Projects\u003c\/li\u003e\n\u003cli\u003eSoil pH Measurement with Liquid Sample\u003c\/li\u003e\n\u003cli\u003eIndustrial and Agricultural Water Treatment Monitoring\u003c\/li\u003e\n\u003cli\u003eUniversity Chemistry and Environmental Science Projects\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp style=\"text-align:center;\"\u003e\u003cstrong\u003eOrder now and add accurate liquid pH measurement to your Arduino, ESP32, or embedded water quality monitoring project.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Lahore Store","offers":[{"title":"Default Title","offer_id":56103986626633,"sku":"SEN-PH-ELECTRODE-BNC-MODULE","price":6200.0,"currency_code":"PKR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0946\/9090\/2089\/files\/WhatsApp_Image_2026-09-15_at_7.05.16_PM_1.jpg?v=1789573290","url":"https:\/\/lahorestore.pk\/products\/ph-electrode-probe-analog-sensor-module-arduino-esp32","provider":"Lahore Store","version":"1.0","type":"link"}