All my smoke alarms are Kidde. The main house has 8 units and the in-law side has 2 units. Each side has one hard wired. The rest are wireless. I believe I incorrectly stated that 1 was hard wired. > > > ------------------------------ > > Message: 2 > Date: Tue, 18 Aug 2015 14:58:4. > > Are all the units Kidde? > > Stan, K4SBZ > >