Fairchild Semiconductor 20812 Pressure Switch is a compact mechanical device that detects pressure and switches electrical contacts when the sensed pressure changes. The part is identified as 20812 with a 250 PSI rating, as stated in the product description alongside the NSMP designation. Suitable for hydraulic or pneumatic systems that require reliable pressure sensing and simple control actuation, this switch provides a straightforward way to monitor pressure and trigger circuits in compact installations.
