Play Ebm7b5 one string at a time and you hear Eb, Gb, Bbb and Db. Eb is the root, Gb the minor third, Bbb the flat fifth and Db the minor seventh. Said aloud, its notes are E flat, G flat, B double flat and D flat.
String by string, low to high, it plays Eb, Bbb, Db and Gb. It runs from Eb on string 5 up to Gb on string 2.
Ebm7b5 uses no barre and no open strings, so you can slide the shape up the neck without changing fingers. Strings 6 and 1 stay silent. Your hand covers two frets, from 6 to 7. There is one more position, starting at fret 10.
Change only string 3 in Ebm7b5 and you have Ebdim7. Inside Ebm7b5 sits a complete Gbm chord, made of Gb, Bbb and Db. Ebm shares two positions with this shape.
Ebm7b5 shows up in two keys. In E major it is the viiø7 and in Db minor the iiø7.