GASLAB Q2 DISPLAYS (OPERATE THE DEVICE) 
Information for general use 
Rev. M / 73023639 
 
7.3.2.  Info display (overview) 
 
This symbol opens the following display: 
The display shows the device’s serial number 
(first line) and the status of the security 
switch (SSW). This is a switch which can be 
sealed, also known as the calibration switch. 
This protection prevents changes to the fiscal 
settings or main device settings and software 
downloads (see section 8.4.12 Changing the 
software configuration (Update / 
Downgrade)). 
Figure 7.16: Info (System) display 
 
Furthermore, the display provides access to the following functions: 
 
 
7.3.3.  Info display (Serial number and TLS certificate)  
The serial number shows after a klick on it as second display information of the device type and the 
used CPU.  
The link Certificate enables to view the MMS certificate for secure data transmission. The action 
Delete certificate allows the authorized user to delete the existing certificate and create a new one. 
 
 
 
Figure 7.17: Display serial number (example)