DOES THIS UNIT OFFER A BATTERY BACK UP
302277
This does not have battery backup and there is no way to hook it up as this unit has an AC motor. If you want battery backup then you want to look at the 8550 belt drive or an 8360 chain drive. The chamberlain WD962KEV is the full equivalent to the 8550 and comes with a replacement rail assembly. None of the LiftMaster units on Amazon come with the rail assembly.
2271007
No it doesn't have a back up camera! the unit, however has performed well for over a year and handles blue tooth calls perfectly! It is really a great buy!
1599115
I do not know because I have not used that feature on our phone yet. I know there are no batteries for back up.
121255
Yes, mine came with a backup key in case the battery dies. So far I've had no issues at all with this.
607339
I have not used with a battery back up system. This is 120v ac only. No option for 12v DC.
1483795
No battery backup as the other responses indicated already. It's worth mentioning that there is some sort of memory function so that it "remembers" the temperature setting when the power does come back on.
770707
There is a small "backup" watcg type battery but it is not a rechargable one. Although I am happy with this unit, I do not recommend it if you are wanting to use it without a power cord.
1934568
Yes there is a battery backup!!! You might have to put the battery's in it.
309150
No there isn't a secondary battery back up. However there are 4 AA batteries that saves the memory.
897821
Mine does not. Instructions & diagram cutaway do not show a battery backup. Hope that helps.
2090516
It does. However, there is no way to turn the unit off without taking the battery out, so it runs down fast if you don't remember to remove it.
1382833
Yes it has a battery backup. All in all good radio with great sound and very easy to pair the bluetooth. Only thing I dont like is the small display and the narrow viewing angle, and the fact it came with no instructions at all
952895
No battery backup is included in this package. Check the website to see if you can purchase one separately.
2236667
It does come with an AC charger and battery backup. We used ours for over three years and had no problems. Power did fail occasionally and the battery took over.
1689723
No battery backup. Instructions say battery not needed and settings are saved in memory. Unit works great for me. I love that it's really easy to program and use
2242135
Yes it has a battery back-up for both units. I do not know about dual voltage. In response to others, i do not have a problem with volume and the unit has incredible range.
2100208
yes it does. This unit is also lighter than previous models because of lighter battery.