There is a manual override button located on the actuator housing

Smith Cyclone series units where maintaining specific manifold pressure and gas-to-air ratios is vital for operational safety

leak-proof pneumatic control circuit in demanding building automation environments

Direct Replacement: Designed as a drop-in Field Controls 46487301 match for the legacy Honeywell Q35RJ-1 model

Voltage Versatility: Rated for 208-230V applications

Resideo HR90 Controller 322055-301 There is a manual overrideThe 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