Carrier CEAS420790-01 High Speed IO Input Module

Carrier CEAS420790-01 High Speed IO Input Module is a digital input module that is part of Carrier's High Speed IO (HSIO) family, designed to capture fast, discrete signals for Carrier control systems. Identified by part number CEAS420790-01 and frequently referenced with the internal designation HK50AA009, this module is used within Carrier HSIO backplanes and chiller control cabinets to feed digital inputs to the control logic. In typical Carrier installations, it interfaces with HSIO-compatible backplanes to relay external signals into the controller's processing path. Verified sources show the CEAS420790-01 designation on reseller listings and product sheets, confirming its role as an HSIO input module within Carrier's chillers and related equipment. Widely available on secondary markets, you may encounter listings for CEAS420790-01 with HK50AA009 cross-reference, underscoring its status as a recognized Carrier spare part for HSIO-equipped systems. When selecting this module, ensure compatibility with your Carrier HSIO chassis and the control architecture of your system. It is intended for integration in Carrier chillers and HVAC control systems, where reliable input capture supports automated fault handling and system monitoring.