does it have to be hard wired? can you use the battery back up only?
1447309
The unit is designed to be hardwired. The battery is for backup only. When only the battery is in place and the unit is not connected to hardwire, the unit will chirp loudly.
1447310
When our power goes out occasionally, the USI Smoke/Carbon Monoxide Alarm starts chirping periodically to let us know the power is out (like we wouldn't know),using the battery back-up. So if its not hardwired, my guess is the unit will think the power has gone out and start the chirping. You can contact USI Customer Service for confirmation at 1-800-390-4321, Ext.238.
1447311
Its a battery operated unit. The hard wire ones shows wires coming off the unit or it says hard wire in the name
1447312
Call Universal Security Instruments customer service. My home is hardwired and I wanted to ensure all 5 detectors were connected to the household current and have the battery as a backup. Further, all of my detectors are interconnected so that if one goes off, they all go off. You may want to check out a different model if you are only interested in a battery operated detector.
382923
this unit has to be hard wired. no plug. i remove the old one and installed this one in it's place if you are handy, it is not a hard job. it really looks nice when it's installed.
571099
yes you can comes with a on and off switch so it can be hard wired directly to the battery or any other power source justl to be on the safe side add a 3 amp fuse just for protection
96732
Must be wired only for power. This is a simple set-up. I'm very pleased with it.
1878757
the battery is for backup only..... in case electricity goes out. You still need to wire it.
69116
I have it plugged into a standard wall outlet and a computer battery back up connected to it. Works great.
2095025
Nop no battery back up. It just plug to the power outlet. Unless you connect it to a battery back up itself.
457402
This can be "hard wired" to an existing low voltage line. Considering if you can't of that there is no onstant battery draw its only for a couple of seconds.
491469
No, it requires batteries to operate the camera settings and can not be completely hardwired. The battery compartment can only be accessed by removing the unit from the wall/box.
597667
No. Hard wired means direct wired -- not a plug in. You can access the wires though near an outlet to use but probably need an electrician to do it.
1657945
It won't work hard wired because it has no wires. Bluetooth not needed. It comes with the USB receiver, you just plug into one of the laptop USB ports and go!
454947
This unit needs to be hard wired to an electrical source. It does not come with a two prong plug, it's a hard wire to electricity. It does have a battery back up but that is only for your light/camera setting, not for memory because the memory is on a SD memory card.
247252
It needs to be wired up. It is designed to be connected directly to the battery but ypu could wire a cigarette lighter adapter to it.
732153
It came with a hard wire option for the battery part. But the connection to the camera is wireless only
356292
I don't think this one does..."Battery powered, provides protection even during power outages". You do have to be careful though as I bought the battery powered version and wanted the hard-wired. The hard-wired version should be explicitly described as so.
2254201
It has to be hard-wired. I use mine to ventilate a hallway when it gets too warm, and I have a line-voltage thermostat turning it on and off...
1769980
Hard wired. You need an electrician. It is also smaller than expected, so check your measurements carefully before you buy.