The Aico EI3000MRF SmartLink Interconnection Module is a white, hardwired smoke alarm that is compatible with smoke, heat, CO, and fire detectors. It has a 10-year manufacturer warranty and uses Wi-Fi as its smart home protocol. This module does not come with batteries included and requires one battery to operate. It is designed to provide reliable home security by interconnecting multiple detectors for enhanced safety. New in box. Unused, box little battered no damage to module
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