Weil McLain 511-624-643 Sensor Assembly R-410A What is the difference between

What is the difference between this and a standard thermal switch

This single-phase replacement motor operates at 200-230V and 60Hz

it is engineered to automatically open the electrical circuit when internal plenum temperatures reach 180°F

or visible pitting or "welding" of the silver contacts

Weil McLain 511-624-643 Sensor Assembly R-410A What is the difference betweenThe Weil McLain 511 624 643 Pressure Sensor Assembly is a critical OEM replacement component designed for high performance hydronic systems. This burner pressure sensor kit includes the transducer and junction box, providing the precise feedback necessary for modulating boiler control and combustion safety. Unlike standard switches, this assembly integrates a no siphon sensor design to deliver accurate static and dynamic pressure differential readings