esphome / feature-requests

ESPHome Feature Request Tracker
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MH-Z19 / MH-Z19b detection range #995

Closed randompee closed 1 year ago

randompee commented 3 years ago

Describe the problem you have/What new integration you would like

The MH-Z19b can be configured for a CO2 detection range of 0-2000ppm or 0-5000ppm. Please add this, with a default of 2000. Please describe your use case for this integration and alternatives you've tried:

In ESPhome this sensor will mostly be deployed in living rooms, where approx. 1000 ppm CO2 should not be exceeded. So, a measuring range up to 2000 ppm maximum is appropriate, especially as the accuracy also seems to be better for a smaller range. Additional context

The manufacturers product manual gives the relevant commands:

These commands are valid also for the elder MH-Z19.

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evils commented 1 year ago

duplicate of #438?