Radars.
Pic #1 Sas (Eagle) general long distance radar
Pic #2 Borbála (female name, variation of Barbara), for AA artillery, they made another one for fighter plane guidance, they name this Bagoly (Owl), these two had the same electronics, they differed in their mechanical structure
Pix #3 Turul on the built in a Me 210 Ca-1, they could create only one piece of this, it was manufactured by Philips
Pic #4 vacuum tube, well, you know before transistors these were the bread and butter of electronics, radio and such, this particular one was a 2,5 kW triode.

Similar case to the others. First we wanted to buy German stuff (the Freya), they denied it. Then we started the research and just then they were willing to give/sell radars. Ofc by late 1943 -early 1944 it was a necessity to deploy some as American strategic bombers started their campaings against Hungarian targets as well.