The item available here is a new old stock ASCO TriPoint pressure switch.  It comes as shown in new condition in the original packaging.  There are SIX initially available (see last picture).

This item has not been tested, and comes with a 30 day return policy from the date the item was shipped. Postage is not covered.

Here's the specs:

Part No: PB21B RV24A11

*See pictures for exact specs*

Items will be paid for immediately and will be shipped using USPS or UPS.