and Archerair systems

Integrated Transformer: Built-in 40VA transformer provides reliable 24V power for thermostat control circuits without external components

Universal Compatibility: Includes universal mounting brackets compatible with IEC 100L and 112M frame sizes

Because this is an authentic OEM HVAC part

For contractors performing a Lennox HVAC repair

Siemens Building Technology RDG400 Stat 319852-301 and Archerair systemsThe Siemens RDG400 is a versatile room temperature controller designed for 24V AC installations requiring precise 0 10V DC modulation or 3 point floating control. Engineered for demanding HVAC applications, this unit excels in managing VAV systems, small reheaters, and cooling equipment. Its multi functional architecture allows for seamless integration into Building Automation Systems (BAS) using PI control logic to minimize temperature drift. The