Hello Guido I have three K-101A battery eliminators the ones sold by Antiqe Electronics comes in a kit has all the A – B and C voltages that the Arbe 111 has , mine are in a case the A -B and C all have a fuse in the line just in case there is a short the fuse I put in will blow , I have a light to indicate when it is on also a switch and a terminal strip in the rear for hook up to the power supply you need , a neat little unit that works just fine , if interested I could send photos , I live in Hamilton where are you from ,all the best Rick