The Farrall Behavior Modifier dates from the 1970’s and was once used in an institution . Unit is in very good condition and starts up and responds to various outputs positivity. I’m always attracted to early medical tech and this one has one of those panels that is pretty ominous and straightforward —definitely has a look to it. Great piece for the collector or as reference object in your medical library. I have worked with many engineers and designers that have found these pieces useful for research and or displays in study museums. This piece should not be used on a person at anytime and is only intended for research and display. Electrodes and head are not included with this item. Unit measures: 9.5 x 9” x 8” H (at highest point)