pH 0-14 Liquid Sensor Module with BNC Electrode Probe
Liquid pH 0-14 Value Detection Sensor Module with pH Electrode Probe (BNC)
The Liquid pH 0-14 Detection Sensor Module with BNC pH Electrode Probe is a reliable analog sensor for measuring acidity or alkalinity in aqueous solutions. It outputs a voltage proportional to the pH value, making it suitable for continuous monitoring in aquariums, hydroponic systems, water quality testing, and laboratory experiments. The included high-quality BNC probe ensures stable and accurate readings, ideal for educational projects and industrial prototypes.
Key Specifications
| Specification | Value |
|---|---|
| Measuring Range | 0-14 pH |
| Operating Voltage | 5V DC |
| Output Signal | Analog 0-5V (proportional to pH) |
| Accuracy | ±0.1 pH (after calibration) |
| Probe Connector | BNC |
| Module Dimensions | 42mm x 32mm x 20mm |
What You Can Build With This
- Aquarium water pH monitor with real-time display
- Hydroponic nutrient solution pH controller
- Automated pool chemical dosing system
- Portable water quality tester for field use
Compatibility
This sensor module works with any microcontroller that has an analog input and can supply 5V, such as Arduino Uno, Mega, ESP32, and NodeMCU. It directly connects to a 5V ADC pin; for 3.3V systems like Teensy or Raspberry Pi Pico, use a voltage divider or ensure 5V tolerance. Raspberry Pi boards require an external ADC (e.g., ADS1115) as they lack analog pins.
Wiring Notes
Connect VCC to 5V, GND to ground, and the OUT pin to an analog input. Before first use, calibrate with pH 4.0 and 9.0 buffer solutions for accurate readings. Avoid submerging the module; only the probe tip should contact liquid.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the analog output connects directly to an Arduino analog pin (A0-A5). Power the module with 5V, and use the standard analogRead() function to get pH-proportional values.
How often should I calibrate the probe?
Calibrate before first use and every month of active use. Frequent calibration (weekly) is recommended for critical applications or if accuracy drifts due to probe aging or contamination.
Does the module work with 3.3V microcontrollers?
The module operates at 5V and outputs up to 5V. Some 3.3V boards have 5V-tolerant ADCs; otherwise, use a voltage divider (e.g., two 10kΩ resistors) to scale the output safely.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items