The Alco-Sensor VXL serial number is located
on a white sticker at the bottom of the
instrument.  It is next to the CE mark and
labeled "No. 111111".
 

      

 The Mylox printer serial number is on
the bottom of the printer.



 The serial number for the ASVXL docking cradle
 is underneath the device.  There is another sticker
on the rear of the unit near the cable connections.