Gravity CL2 Sensor (Calibrated) - I2C & UART
Description
- Gravity CL2 Sensor (Calibrated) - I2C & UART
- Offers high stability and high sensitivity
- Detects chlorine (CL2) gas
- Strong anti-interference ability
- Supports three output modes analog, I2C, and UART
- Working Voltage: 3.3 ~ 5.5 V DC
The Gravity CL2 Sensor (Calibrated) - I2C & UART detects chlorine 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 chlorine in the environment. Can be widely used in the detection of chlorine in the chemical, pharmaceutical production, and environmental protection fields.
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 the sample code, can quickly build a chlorine concentration detector.
DFRobot has introduced 12 gas detection sensors in this series, CO, O2, NH3, H2S, NO2, HCL, H2, PH3, SO2, O3, CL2, and HF, which are used in exactly the same way and data format, so you can combine them according to your needs.
- 1x Gravity Chlorine Signal Conversion Board
- 1x Chlorine Sensor Probe
- 1x Gravity - 4-Pin Cable
Size
- Adapter Plate size: 37 x 32 mm
- Detection Gas: Chlorine (CL2)
- Detection range: 0 ~ 10 ppm
- Working Voltage: 3.3 ~ 5.5 V DC
- Working Current: < 5 mA
- Output Signal: I2C, UART (0 ~ 3 V), analog voltage
- Working Temperature: -20 ~ 50 °C
- Working Humidity: 15 ~ 90 % RH (non-condensing)
- Storage Temperature: -20 ~ 50 °C
- Storage Humidity: 15 ~ 90 % RH (non-condensing)
- Lifespan: >2 years (in the air)
- Compatibility: Arduino, ESP32, Raspberry Pi
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If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
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- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
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How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
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Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".

