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For technicians handling larger jobs
triggering two DPDT relays to shut down fans or open heating valves
Bore Security: The 7/8" fixed bore includes a set screw over the key and a second at 90 degrees to prevent shaft galling and vibration
This OEM vent pressure switch is calibrated to a specific -1
Resideo HR90 Controller 323080-701 For technicians handling larger jobsThe Resideo HR90 TheraPro is an advanced digital radiator controller designed for precise hydronic zone management in residential and light commercial applications. This electronic radiator valve actuator utilizes a clear, backlit adjustable display for seamless integration into any HVAC manifold system or standalone radiator setup. Featuring an M30 x 1. 5 connection, the HR90 is compatible with standard thermostatic radiator valves, providing
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