Bi-directional
ESI Technology Ltd
ESI is a UK-based pressure sensor manufacturer that has the experience and technology to deliver products that are accurate and have high reliability. They have been in business since 1984 and have grown steadily since that time. Their pressure sensors and pressure transmitters use silicon-on-sapphire sensing technology for outstanding quality and performance.
SUCO Robert Scheuffele GmbH & Co. KG
SUCO Robert Scheuffele GmbH & Co. KG (SUCO) is an established leader in the manufacture of pressure sensors, and electronic pressure switches in the field of fluid technology and power transmission. They make pressure transmitters and pressure transducers using piezoresistive and silicon-on-sapphire technology. Their line of pressure transmitter products includes mechanical pressure switches, vacuum switch technology, and explosion-proof pressure switches. Many of their products also include excellent overpressure protection up to 4X the maximum rating.

