What is the warranty period?

Twelve months

What are the options for calibration?

1. Manual calibration with a shim of known value;
2. Manual calibration without a shim; or
3. Reset to factory setting

What type of battery do the gauges use?

A 9 volt alkaline battery

Do I need to shut off the gauge to replace the battery?

No

What happens to my data when I remove the battery?

Nothing, the data is stored while changing the battery, even on the M series and H series gauges.