Is the technical upgrade of the gas alarm charged

The charge for the technical upgrade of the gas alarm may vary depending on the manufacturer and model of the gas alarm. It is recommended to consult the manufacturer or supplier for specific charge information.

Some gas alarm manufacturers may offer free technical upgrades, while others may charge a fee for technical upgrades. If the gas alarm needs to be upgraded, it is recommended to consult the manufacturer or supplier in time to understand the specific charge and service content.

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