These are can bus remote I/O modules. The rubbery stuff is know as potting material and is not easily removed. often the casing on these are stainless. If the connector ends will spin and break off that is likely you most value. The P/C board inside has a small micro controller and some I/O chips, and copper traces,none of which have much value. I am fairly sure there is not enough of anything of value to justify tearing these down. After removing the connector ends it would go as dirty stainless at my scrap yard.
|