Can this switch be used for differential pressure

it is specifically intended for applications requiring simultaneous dual pressure monitoring to protect the compressor from both loss of charge and overpressure

check for continuity across the 24V heater pins (the bottom terminals)

while the LED status indicator provides immediate visual feedback on the relay state

Lochinvar & A.O. Smith 100093638 Kit 321142-301 Can this switch be usedMaintain the high efficiency performance of your commercial or residential heating plant with the Lochinvar & A. O. Smith 100093638 Kit. Designed specifically for integration with advanced VK8115V gas valve assemblies, this genuine OEM Gas Valve Kit ensures precise gas flow control and optimal combustion for both natural gas water heaters and high efficiency boilers. As a replacement gas valve engineered for the Lochinvar Knight series and compatible