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Purple gas sensor breakout seen at an angle, with two Qwiic connectors, a three-way ADDRESS switch, two rows of header pads and the round gas cell underneathProductSoldered Electrochemical Cl2 Gas Sensor Breakout (Qwiic)Chlorine sensor board with an SGX-4CL2 cell for 0 to 10 ppm, read over Qwiic.SKU 333332DatasheetSGX-4CL2 datasheetThe chlorine cell's performance, operating conditions, lifetime and cross-sensitivity figures.ArduinoElectrochemical Gas Sensor Arduino libraryThe Arduino library this documentation is written against, with its examples.commit c4df54bMicroPythonElectrochemical Gas Sensor MicroPython libraryThe MicroPython module this documentation is written against, with its examples.commit 623e1e6MicroPythonMicroPython library on mimThe MicroPython library's package page on mim.