Ansmann aps 300 1000 1500 traveller 3 12vdc power supply ansmann 5311103 this 36w power supply from ansmann with adjustable output voltage settings of 3v 45 v 5v 6v 75v 9v and 12v to power many small electrical devices included in the set are different output connectors which can be connected to the output cable with the desired polarity ansmann 5311103 aps 300 traveller 3 12vdc 36w