as well as the narrower 4L and A series belts

and a pressure regulator into a compact housing

Specifically designed as a 1

making it a direct-fit solution for many modern hydronic systems

Functional Devices RIBMNU1S Relay R-407A as well as the narrowerThe Functional Devices RIBMNU1S Relay is a professional grade 15 Amp pilot relay designed for high reliability switching in BAS, HVAC, and lighting control applications. This track mounted modular relay features a versatile triple voltage coil, allowing for seamless integration into systems utilizing 10 30 Vac Vdc or a standard 120 Vac power source. Engineered for long term field performance, it utilizes a SPST (Single Pole Single Throw) contact