Starting Operation
- Protect the measuring tool from moisture and direct sunlight.
- Do not expose the measuring tool to any extreme temperatures or variations in temperature. For example, do not leave it in a car for extended periods of time. In case of large variations in temperature, allow the measuring tool to adjust to the ambient temperature before putting it into operation. The precision of the measuring tool may be compromised if exposed to extreme temperatures or variations in temperature.
- Make sure that the measuring tool has sufficiently acclimatised to the ambient temperature. In case of large variations in temperature, acclimatisation can take up to 30 minutes. This may be the case, for example, if you first perform a measurement in a cool basement and then head upstairs to take a measurement in a warm attic.
- Avoid hard knocks to the measuring tool or dropping it. After severe external influences and in the event of abnormalities in the functionality, you should have the measuring tool checked by an authorised Bosch after-sales service agent.
Switching On and Off
- To switch on the measuring tool, press the button
or the centre of the button 
.
- The measuring tool will be ready to take measurements following a brief start sequence.
- To switch off the measuring tool, press and hold the button until the power off screen appears on the display.
- The measuring tool's settings will be saved. The saved measured values (i) will be deleted.
In the settings, you can choose whether and after how long the measuring tool automatically switches off see Overview of Menus.