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DFRobot

DFRobot Gravity HCL Sensor (Calibrated) - I2C & UART

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DF Robot Modules for premium buyers

The DFRobot Gravity HCL Sensor (Calibrated) - I2C & UART by DFRobot is a premium df robot modules designed for premium buyers. It features Operating Voltage (V): 3.3 to 5.5 and Resolution: 1.1ppm.

₹20,603
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Total: ₹20,603
Buying tip: A top-tier option — the best features and quality available in this category.
Estimated delivery: 24 Aug7 Sept
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Quick Specs

Operating Voltage (V): 3.3 to 5.5
Resolution: 1.1ppm
Working Current (mA): <5
Signal Output: I2C, UART output (0~3V), analog voltage
Operating Temperature (°C): -20~50℃
Operating humidity: 15~90%RH(Non-Condensing)

Ideal For

Electronics projectsArduino / Raspberry Pi buildsPrototyping
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SKU: robu-1209999Category: DF Robot Modules

About This Product

The DFRobot Gravity HCL Sensor (Calibrated) - I2C & UART by DFRobot is a premium df robot modules designed for premium buyers. It delivers reliable performance at an accessible price.

Key Specifications

  • Operating Voltage (V): 3.3 to 5.5 — works with standard household power
  • Resolution: 1.1ppm
  • Working Current (mA): <5
  • Signal Output: I2C, UART output (0~3V), analog voltage — works with standard household power
  • Operating Temperature (°C): -20~50℃
  • Operating humidity: 15~90%RH(Non-Condensing)
  • Storage Temperature (°C): -20~50 — plenty of room for files, apps, and media
  • Storage Humidity: 15~90%RH — plenty of room for files, apps, and media

Why Buy from Elecvora?

Elecvora sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

This is a HCL ( hydrogen chloride )Sensor (Calibrated) - I2C &amp; UART sensor that detects oxygen concentration and supports three output modes: analog, I2C, and UART. The probe has been calibrated at the factory, which can quickly and accurately measure the concentration of oxygen in the environment. Can be widely applied to fields like portable devices, air quality monitoring devices, industries, mines, warehouses, and other spaces where the air is not easy to circulate. The probe adopts the electrochemical principle, has the characteristics of strong anti-interference ability, high stability, high sensitivity, etc., and the service life is as long as two years. The sensor has 32 modifiable I2C addresses, an integrated temperature compensation algorithm, and a threshold alarm function, It has good compatibility with mainstream main control devices such as Arduino, ESP32, and Raspberry Pi. The easy-to-use Gravity interface, coupled with our sample code, can quickly build an oxygen concentration detector. If you by this product you will get ( 1 PCB, 1 Connection wire, 1 HCL Sensor (Calibrated) - I2C &amp; UART ) All products are brand new & Comes with  6 Months Warranty. The products is easy to handle & easy to use also easy to operate with your projects,


Useful link:

DFRobot Gravity HCL sensor tutorial.


Features:

  1. Detection Gas: CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, HF(Need to change different probe)
  2. Factory-calibrated, accurate measurement
  3. High sensitivity, low power consumption
  4. New condition.
  5. Excellent stability and anti-interference
  6. Three output modes: I2C, UART and analog
  7. Long service life(2 years)
  8. Compatible with 3.3~5.5V main controllers
  9. 32 modifiable I2C addresses
  10. Reverse connection protection
  11. Temperature compensation
  12. Threshold alarm

Packages Includes:

1 x DFRobot Gravity HCL Sensor (Calibrated) - I2C & UART

Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.