Mattel's I.A.N. (Invisible Alien Neutralizer) (1980, LED,
9 Volt, Model# 1994)
U. S. Patent # 4,403,777
Invented by: Tim Effler
Additional development by Robert Del Principe, David Hostetler
and John Ling (according to the patent).
View Manual
This device is used to neutralize those pesky Invisible Aliens. The I.A.N. can help you locate the aliens and neutralize them before they get to you to steal your energy! (Well, something like that... :) Fairly difficult to find, only 10,000 were ever made as the toy was not successful.
Do I have this? Yes, boxed (new, this is mine pictured).