This power supply can deliver a stabilised DC voltage, continuously adjustable from 0 to 12 V.
In addition, it provides an alternating voltage (unstabilised) selectable between 2, 4, 6 and 12 V.
Technical characteristics:

• Continuous output:
  Output voltage: 0 - 12 V stabilised, continuous adjustment
  Output current (max.): 3 A
  Wave and noise (max.): 100 mV
  Electronic overload protection
  
• Alternative output:
  Output voltage: 2 - 4 - 6 - 12 V, selectable, unstabilised
  Output current (max.): 3 A
  Circuit breaker protection against overloads.
  
• Main voltage: 230 V / 50 Hz
  
• Dimensions: 203x225x117mm
  
• Weight: 3 kg