• The initial power-on requires more than 5 minutes of preheating. It is recommended to preheat more than 24 hours if it has not been used for a long time.
• Do not plug or unplug the sensor on the module.
• It is forbidden to directly solder the pins of the module, but the sockets of the pins can be soldered.
• The module should avoid contact with organic solvents (including silica gel and other adhesives), paints, pharmaceuticals, oils and high-concentration gases.
• The module must not be subjected to excessive shock or vibration.
• Do not apply this module to systems involving personal safety.
• Do not install the module in environment with strong air convection.
• Do not leave the module in high-concentration organic gas for a long time.
• The data returned by the serial port of the module is the real-time concentration value in the current environment. If there is no standard gas, please do not try the calibration command. This command will clear the calibrated data, and the data returned by the serial port will be inaccurate.
• To judge whether the module communication is normal, it is recommended to use a USB to TTL tool (communication level 3V) to observe and judge according to the communication protocol through the serial debugging assistant software.