--- product_id: 232087546 title: "Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring" brand: "dfrobot" price: "394.55 DT" currency: TND in_stock: true category: "Dfrobot" url: https://www.desertcart.tn/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol store_origin: TN region: Tunisia --- # 0.15% high precision 2-year lifespan Plug & play no soldering Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring **Brand:** dfrobot **Price:** 394.55 DT **Availability:** ✅ In Stock ## Summary > 🌬️ Breathe innovation: Plug in precision oxygen sensing, no sweat required! ## Quick Answers - **What is this?** Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring by dfrobot - **How much does it cost?** 394.55 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol) ## Best For - dfrobot enthusiasts ## Why This Product - Trusted dfrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile IoT Ready:** Perfect for smart greenhouses, safety alarms, and air quality projects—join the future of connected environmental monitoring. - • **Robust & Long-lasting:** Electrochemical probe ensures ultra-low drift (<2%/month) and stable operation across -20~50°C for 2+ years. - • **Effortless Integration:** Plug & play with standard 4-pin Gravity interface and included cable—compatible with Arduino, ESP32, Raspberry Pi. - • **Instant Digital Precision:** Built-in signal chip delivers direct I2C oxygen readings—ditch complex ADC math and coding headaches. - • **Rapid & Reliable Calibration:** Fast ≤15s response and easy air calibration with sample code—no costly calibration gases needed. ## Overview The Gravity I2C Electrochemical Oxygen Sensor Module offers ultra-precise (0.15% resolution) digital oxygen concentration readings via I2C, eliminating analog complexity. With plug & play setup, wide voltage compatibility (3.3V-5.5V), and fast calibration, it’s engineered for seamless integration into Arduino, ESP32, and Raspberry Pi projects. Designed for durability with a 2-year lifespan and stable performance in harsh environments, it’s the go-to sensor for IoT air quality monitoring and environmental safety applications. ## Description Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring: desertcart.com: Industrial & Scientific ## Features - [INSTANT DIGITAL READINGS VIA I2C] Stop wrestling with complex ADC formulas! Unlike traditional analog sensors, this O2 module features a built-in signal conditioning chip that outputs precise oxygen concentration directly via I2C interface. Saves hours of coding and eliminates voltage-drop errors, making the project development effortless. - [PLUG & PLAY, NO SOLDERING REQUIRED] Designed with a standard Gravity 4-pin interface and including the connecting cable, users can say goodbye to messy wiring. Supports a 3.3V~5.5V wide voltage input, ensuring compatibility with Arduino Uno ESP32, and Raspberry Pi without needing level converters. - [HIGH PRECISION & QUICK CALIBRATION] Accurately measures ambient oxygen levels (0-25% Vol range) with a high 0.15% resolution and fast response time (≤15s). Worried about complex setups? We provide ready-to-use sample code that allows for a quick air calibration process in natural environments—no expensive calibration gases needed. - [2-YEAR LIFESPAN & HIGH STABILITY] Powered by an electrochemical probe, it offers exceptional resistance to cross-gas interference and ultra-low drift (<2% per month). Built to operate reliably in harsh environments (-20~50°C), delivering a long service life of over 2 years in normal air conditions. - [VERSATILE IoT APPLICATIONS] The ultimate choice for DIY makers, STEM educators, and engineering prototypes. Ideal for monitoring air quality in confined spaces, underground garages, smart greenhouses, mushroom cultivation, and building safety alarm systems. (Note: Designed for ambient air monitoring; not suitable for medical or 100% pure oxygen applications). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08BL1NLGV | | Best Sellers Rank | #203,788 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #710 in Temperature Probes & Sensors | | Brand | DFROBOT | | Brand Name | DFROBOT | | Current Rating | 0.1 Milliamps | | Customer Reviews | 4.8 out of 5 stars 10 Reviews | | Item Weight | 37 Grams | | Manufacturer | DFROBOT | | Material | Nylon | | Material Type | Nylon | | Maximum Supply Voltage | 5.5 Volts (DC) | | Measurement Accuracy | 0.15%Vol | | Measuring Range | 0~25%Vol | | Model | SEN0322 | | Mounting Type | Flange Mount | | Output Type | I2C digital data stream | | Part Number | SEN0322 | | Response Time | 15 seconds | | Smart Home Compatibility | Not Smart Home Compatible | | Specific Uses For Product | Oxygen Sensor | | Style | Portable,Compact | | Style Name | Portable,Compact | | Upper Temperature Rating | 50 Degrees Celsius | ## Product Details - **Brand:** DFROBOT - **Current Rating:** 0.1 Milliamps - **Item Weight:** 37 Grams - **Material:** Nylon - **Style:** Portable,Compact ## Images ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 1](https://m.media-amazon.com/images/I/61dvkKby3AL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 2](https://m.media-amazon.com/images/I/61NOOGsOGlL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 3](https://m.media-amazon.com/images/I/61oTvGKNOaL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 4](https://m.media-amazon.com/images/I/61usXSZlzRL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 5](https://m.media-amazon.com/images/I/61EvHByqoSL.jpg) ## Frequently Bought Together - Gravity: I2C Oxygen Sensor Compatible with Esp32 (0-25% Vol) | High Sensitivity High Stablility High Anti-Interference | Suitable for Portable Air Quality Monitoring Device - ELEGOO UNO Project Super Starter Kit with Tutorial and UNO R3 Board Compatible with Arduino IDE - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol](https://www.desertcart.tn/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-28*