Power supply, 250 volt 

Constant voltage operation mode
Digital display of mA or volts (selectable)
Dual output − run two gels at once at the same voltage (current requirements permitting)
Output: 20-250 V selectable in 10 V steps
Capacity: up to 300 mA at 150-250 V
up to 500 mA below 150 V
LED Fault Display for overcurrent and blown fuse. Audible overcurrent alarm.
Operating temperature range: 0 to 40 °C