Mode 68-9006S-1 Power Supply 9VDC 600mA (CTR-) Wall Mount Adapter, 2.1mm Plug, Regulated / Switching

9vdc @ 0.6A / 600ma 2.1mm plug
Polarity : center negative
These switching power supplies will accept input voltages of 90 - 240VAC 50/60Hz and will provide a constant output voltage (within approx. 10%) from no load to full rated current load. All are cUL/us approved as well as CE and other approvals. The desk top units come complete with power cords.
Brand name(s) : Mode Electronics

Level VI efficiency (energy saving mode with no load = less than .1 watts) : Voltage output will be less than rated voltage, when nothing is attached to the adapter.

These switching power supplies provide a regulated output voltage regardless of the current used.Solid state components are instead of a transformer.