Check the listing for details. ONITY HT24 OUTSIDE READER CONTROL CIRCUT BOARD HT24 HT28 REPLACEMENT - Untested. Condition: For parts or not working. Listed at 55.00 USD. Replacement board in untested condition. Was told it was working before it was removed however I cannot guarantee it as I can’t test it and is sold as-is for parts or repair and is a non returnable item. The ONITY HT24 Outside Reader Control Circut Board HT24 HT28 Replacement is a high-quality commercial door hardware component by the trusted brand Onity. This product is designed to provide reliable control and access management for outdoor readers, ensuring security and functionality for commercial establishments. Perfect for businesses looking to replace or upgrade their existing door hardware systems, this circuit board offers a seamless integration with compatible Onity systems for smooth operation.