NEW - RADIO SHACK - Battery Operated TEMPERATURE CONTROLLER - With Instructions

Description

Bought a number of these over the years for various uses and ended up with a couple left over.
Didn't open the package to scan the user's manual (comprehensive for RS) but I remember this as a versatile unit that allows you to easily interface to different devices (Solid State relays, etc.) to control temperature in/on whatever you place the wired sensor.  Can even be set to show Min/Max temperature excursions since last cleared.  And being battery operated, it can be brought into service QUICKLY as you don't have to wire it into a power source.
Anyway, not bad for the price if your application isn't too complex (Note that the catalog advertisement used for the 2nd photo is from a 1996 catalog and is priced new at .99) - basically .00 in today's money.