Highly recommended. Very well engineered unit. Package can be opened by removing two small screws & splitting the clamshell. Output voltages match the labelling quite precisely. Selector switch is robust - no 'iffy' voltage settings. Main output connector is commonplace 2.1/5.5 mm barrel connector, my overwhelming favourite. I wish a companion unit was available with a higher range of output voltages, say 6.0 to 28 volts [at half the output current, of course] with otherwise identical mechanical features.