12V 3.8A AC power adapter for SureCall in-building cell phone signal boosters, including Fusion4Home, Fusion5s, Fusion5X, Fusion7 and DualForce. 12V 3.8A AC power adapter Part number: SC-AC-12V3.8A-B For in-building cell phone signal boosters Fusion4Home, Fusion5s, Fusion5X, Fusion7 and DualForce