This Curtis 1232E-7221 72-96 V 175 A controller was used for testing with a project. It wasn't closing a Gigavac contactor and was assumed it had a problem with the contactor driver. Our team attempted to disassemble and was successful - but these are hard to get apart! It was found that the main contactor driver circuit was fine and that the Gigavac contactors just don't play well with the Curtis contactor driver circuit. I'll ship quickly for $20 anywhere in the lower 48 via FedEx Ground. Guaranteed functional within 30 days. It's no longer sealed but works fine.