Keller manufactures a variety of pressure transmitters designed to provide reliable pressure measurement for a variety of applications. Each instrument uses state-of-the-art electronics and proven piezoresistive technology to provide outstanding accuracy, longevity and price. These instruments are built to order with custom ranges up to 15,000 psi, ¼-in. NPT pressure connections, analog and digital output options and your choice of either cable or DIN-type electrical connections. Keller pressure transmitters are built in the U.S. in only three business days, and several models include guaranteed lightning protection at no additional cost.