Profitec Universal AC adapter DC 9V 12V 15V 18V 20V 24V 13.5V / 1500mA max. stabilized (electronic)
especially the nominal voltage is well respected. The power consumption at idle (220mW) could be lower, but is still acceptable. The EMI suppression and the screening are borderline. If in doubt, you should a throttle and an RF Elko downstream, when