LENCO LBT-188 Guide D'utilisation page 21

Remark: Due to the ErP Stage 2 requirements for power saving
measures, a unit which is connected to the mains power will switch
itself to standby mode automatically if no music has been playing for
about 20 minutes.
If your unit switches off regularly, this is no defect.
Power supply adaptor
Manufacturer: BRIGHTPOWER OPTOELECTRONIC TECHNOLOGY CO., LTD
Model number: SW1200500-FM
Input voltage: 100-240V
Input AC frequency: 50/60Hz
Output voltage:
Output current:
Output Power:
Average active efficiency: 79.62%
Efficiency at low load (10%): 70.40%
No load Power consumption: 0.073W
Use only the power supply listed in the user instructions
Guarantee
Lenco offers service and warranty in accordance with the European law,
which means that in case of repairs (both during and after the warranty
period) you should contact your local dealer.
Important note: It is not possible to send products that need repairs to Lenco
directly.
Important note: If this unit is opened or accessed by a non-official service
center in any way, the warranty expires.
This device is not suitable for professional use. In case of professional use, all
DC 12V
0.5A
6W
20