The H Series pressure switches can be utilized in HVAC, appliance, medical, automotive, pump, and water-system applications. The series includes pressure switches ideal for ultra-low operating pressure ranges down to 0.04 inch/H2O (0.25 psi), the company said. The differential switches allow for high operating pressures up to 5,000 psi. Vacuum switches are designed to stand up to extended-duty applications. Built with rugged construction for long-lasting operation, the units are field adjustable, allowing fine-tuning to meet application requirements. The switches are offered in an array of pressure ranges, electrical connections, and port configurations. UL approval and factory calibration are available on most models. Custom-engineered designs may also be requested.