Handling up to 10 A at 280 Vac, One Series 4-Wire electronic switch provides solid-state relay switching output, LCD, built-in continuous diagnostics, self-checking, and decision-making capabilities. Providing local switch wired directly to high-current relays or contactors, it handles pressures from 0-4,500 psi and temperatures from -50 to +450°F. Setpoints are adjusted via front keypad and digital display. On/off deadbands are also adjustable, from 0-100% of range.