CARRIER 38AD900001 Carrier Relay Package Accessory

The 38AD900001 Carrier Relay Package Accessory is a Carrier HVAC component described as a remote control/relay package used to extend or enable control signals within Carrier system controllers, acting as a bridge between control electronics and field devices, and designed for straightforward installation in compatible Carrier equipment. Identified by part number 38AD900001, this accessory appears in multiple listings as a Carrier/UTC catalog item and is sometimes described as new-in-box with installation papers, indicating its status as a factory-original replacement part. Distributors label it as a remote control/relay package, underscoring its role in providing remote signaling and relay functionality for Carrier HVAC applications. The part is available through several distributors, including Radwell and various online marketplaces, where it is marketed as a remote control/relay package for Carrier equipment. If you are replacing a control accessory in a Carrier installation, consult the service manual or your Carrier distributor to confirm compatibility with your specific unit and installation requirements.