Is hardwiring required at all, or can I use all of them as battery operated?
627876
The SA521CN is designed to operate as hard wired with other wired smoke alarms,and also connect to wireless "One Link" First Alert alarms. If hard wired you get power from the 110 volt connection. It also has two AA batteries which work when the power is off. There are other wireless models of "One Link" that look similar, use two AA batteries, and wireless connect among themselves and the SA521CN. I alrady had a hard wired system with First Alert connections. I purchased only one SA521CN to replace an existing hard wired only alarm, hard wired it, and also purchased some "One Link" alarms that operate only on two AA bateries. By having ONE SA521CN hard wired, if any alarm goes off--wireless or hard wired only, then ALL hard wired AND wireless alarms go off. Responding directly to the question, I assume this can be used strictly as wireless without a short battery life, but there are other models specifically operating on two AA only. I don't know if the battery life would be shorter on theSA521CN or not, but it will work..
627877
It can run off either one separletly or together... So yes. It can run on barriers only and on hardwirring
1766524
These are hard wire only. I suppose you could self wire a plug onto it, if you are savvy with electrical, but they come just bare wires.
946347
you can operate them manually or yes you will need a power source & switch if u want to power up
1220633
You could have them both connected to the same battery. Each has its own controller.I do not know if you can wire them for any configuration other than 12v....
96616
You could daisy chain these if you have some electrical experience. You'd need to purchase 3 sets to make it work.
2103847
They should come plug and play unless you have a different set. If you do youll have to hardwire then in.
2026316
You can hardwire but you must use the transformer in between. I just plugged mine into an outlet that I have a wireless remote for so I could turn it on and off without plugging and unplugging.
714386
I am not sure if there are power limitations, but you technically could plug them all into here. I use every outlet, but all of the equipment is not on at the same time.
506881
I am not an electrician. I bought these for my mother to go in her kitchen. my brother installed them. They are supposed to be plugged in and that's how he did hers. I guess it's a possibility it could be hardwired if somebody knows how to do it, but I can't really say.
180166
They are not battery operated, you will need a power source. They come with around 20 feet of power cord, and from that you can add extension cord to a power outlet.
609836
They don't provide POE. If you have a network switch that provides POE, (like I did) it will not work. You must connect them to a power source
275445
Since it has a power adapter, I would say you cannot hardwire the unit without some current adjustment mechanism. If it just had a simple plug at the end, then you could (I assume as a non-electrician).
1373173
These are not battery operated. They plug into standard household 110volt AC outlet.
1985863
Yes, they need power to work, but they are dc voltage so you could rig up a power supply on the board
298449
I answered 'yes' by mistake - it is not necessary, so there is no confusion. The speakers are self powered, you simply need to plug them in from the speaker with the power cord to a 110 outlet.
506882
They CAN be hard wired. The important question is MAY they be hardwired. You need to check your local electrical codes on if, how, and by whom the work may be done.
1611649
I would ask what are you using them for? But Yes they need to be wired (RED) to battery, ground the black.