The 12V 3.8A A/C power supply (SC-AC-12V3.8A-B) can be used with in-building signal boosters, including all Fusion2Go models and the Fusion4Home (15-00727/15-00765), Fusion5 (15-00766), Fusion 5X (15-01236), Fusion Professional (15-07392) and Fusion Professional 2.0 (15-10041).