Turn real-time pressure data into better espresso.
Learn the essentials of BOOKOO espresso monitor and get started quickly.
Learn the essentials of BOOKOO espresso monitor and get started quickly.
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No. Using the EM while charging is not recommended, as it may affect battery safety and lifespan.
For best performance, fully charge the EM first, then disconnect the charger before use.
See battery safety details in our Help Center.
A small difference between EM readings and mechanical pressure gauges is normal and within operating tolerance.
Mechanical gauges typically allow ±0.3 bar, while the BOOKOO EM measures within ±0.1 bar, resulting in a possible combined deviation of up to ±0.4 bar.
This does not indicate a malfunction if extraction behavior remains normal.
For more details, please visit our Help Center.
If EM data seems incorrect or delayed, make sure you’re using the latest BOOKOO N App and that your EM firmware is up to date.
Restart the app and manually reconnect your EM.
Older or low-performance phones may also cause slight delays.
For detailed troubleshooting, visit our Help Center.
Ensure your EM has the latest firmware, is fully charged, and the app has Bluetooth permissions (and Location on Android).
Disconnect any previous connections and manually reconnect in the BOOKOO N App.
For detailed troubleshooting, visit our Help Center.