Maintenance; Rechargeable Battery Care; Notifications - TESTO 400 Instruction Manual

11 Maintenance

2 Click Next

Individual apps and additionally installed apps can be closed manually.
E-mail and Bluetooth
If always
undone in this menu. This means that both export options will be
available again in the future.
11 Maintenance

11.1 Rechargeable battery care

Battery replacement may only be carried out by Testo Service.
• At low ambient temperatures, rechargeable battery performance decreases.
This reduces the available useful life.
• Do not store the rechargeable battery for long periods when discharged.
(Best storage conditions at 50-80% battery level, 10-20 °C ambient
temperature.) Fully charge before using again.
• The available useful life of the rechargeable battery reduces more and more
with frequent use. If the useful life is significantly shortened, the
rechargeable battery should be replaced.

11.2 Notifications

In the main menu, notifications are marked with an orange dot next to
the menu entry. Depending on the menu entry, these notifications
contain different information.
Menu entry
Sensors
Help and Information, Instrument
information
100
or Cancel.
® settings can be reset.
has been selected for the data export, the setting can be
Information
Calibration reminder:
The reminder date of a stored
calibration certificate has been
exceeded (see Section 9.7.2).
Update information:
A software update is available on the
Testo server. This can be downloaded
with an existing WLAN connection
(see Section 10.1).