Hot Box II Rockwell Scientific Research Inc. Vintage I can't find any info on it and do not know what it does I did not test it I do not know how it works. It's in good shape and lights up when plugged in please look at pictures Please look at all the pictures this is what will be sent to you If you are unsure of anything please ask questions before you buy What you see is what you get nothing more nothing less If it's not in the pictures it does not come with it unless stated. Smoke and pet free home.          M1