IO Hvac Controls TWIN Twinning Kit 323269-701 Built with durable internal components

Built with durable internal components to withstand consistent thermal cycling

a clogged or cracked suction tube prevents the inducer's negative pressure from reaching the switch diaphragm

the unit features a high-sensitivity stainless steel coiled sensing element that provides rapid response to ambient changes without the interference of barometric pressure

Precise Calibration: Features a fixed

Critical Safety Integration: The manual reset feature forces a professional inspection before system restart

IO Hvac Controls TWIN Twinning Kit 323269-701 Built with durable internal componentsThe iO HVAC Controls TWIN Universal Twinning Kit is a field proven solution for contractors needing to synchronize multiple HVAC units under a single control point. Commonly cross referenced as the iO TWIN or TK 400, this panel enables a single thermostat to operate two separate systems, ensuring simultaneous blower and stage activation. This kit is compatible with single stage, multi stage, and heat pump equipment, supporting up to 3 heating and 2