does it use batteries to back up in event of power failure. EC-B100 does.
1148527
I just checked it and there is a section on the bottom that says battery back up. I haven't done it.
1148528
Absolutely, and it was tested as we recently had a several hour power loss and it had the correct time when the power came back on. 3 AAA batteries power it. It's a great unit.
1148529
it backs up for power surges - it does have a time limit on how long it stays on without power. I absolutely love it - it has the two alarms - either by soothing sounds/radio or alarm noise - best clock/radio ever!!
1148530
Yes, it uses 3 AA batteries for back up. I haven't had to rely on the batteries yet. I absolutely love this alarm clock. The sounds are realistic, clear, the beginnings/ends of the "loops" are not noticeable. Even the radio is great. Living in a place where usually only one station is available, I am enjoying the +++ stations I'm now getting! This is a great, no best clock/radio I would ever want.
1194427
I do not know for sure, but I believe it has electronic memory chips that hold what is stored in them even if there is no power.
1933313
it does have a battery back up. but you must install batteries and use the ac adapter for power source.
460910
Yes! It has both, but batteries are not required for proper operation. If you want a battery backup for a power failure or if you don't have a place to plug the unit in, then you can install batteries. For me, I removed the batteries, since my garage door won't work in a power failure situation, anyway. Leaving the batteries in just allows an opportunity, over time, for battery leakage to destroy the unit.
819291
The battery charger will charge when plugged in. I believe the backup is for emergency and use an electric for normal use.
666812
The unit's control panel has no battery back-up system to "remember" what state of operation it was in prior to a loss of power. The heater defaults to the OFF when power is lost, then restored.
1483794
No they don't have battery back up. They are great though and I now have them in every room of the house running baseboard heaters. With the exception of the one running the gas fireplace. Battery back up is usually found in the programmable thermostats so it will save your settings in the event of a power outage.
1249488
No. It has no batteries to use for a backup. So if the power quits, so does the phone
2095025
Nop no battery back up. It just plug to the power outlet. Unless you connect it to a battery back up itself.
2109246
This system does not have a back up battery but you can always buy a UPS (uninterrupted power supply) battery back up for it. You will plug the back up battery into the outlet and the system into the back up battery outlet. I plug this system above my dropped ceiling in my business and all the wires were ran in the exterior door's molding. The exit button wires were ran through the wall and around the exterior door's molding and connected to the keypad. The UPS can be used on anything like computers, alarm systems or any kind of medical devices that need power to stay on even if there is a power outage. This system does not have a back up battery but you can always buy a UPS (uninterrupted power supply) battery back up for it. You will plug the back up battery into the outlet and the system into the back up battery outlet. I plug this system above my dropped ceiling in my business and all the wires were ran in the exterior door's molding. The exit button wires were ran through the wall and around the exterior door's molding and connected to the keypad. The UPS can be used on anything like computers, alarm systems or any kind of medical devices that need power to stay on even if there... » Read More This system does not have a back up battery but you can always buy a UPS (uninterrupted power supply) battery back up for it. You will plug the back up battery into the outlet and the system into the back up battery outlet. I plug this system above my dropped ceiling in my business and all the wires were ran in the exterior door's molding. The exit button wires were ran through the wall and around the exterior door's molding and connected to the keypad. The UPS can be used on anything like computers, alarm systems or any kind of medical devices that need power to stay on even if there is a power outage. « Show Less
386594
No. A battery backup is less necessary than most people think and unless you live in an area with frequent/rolling blackouts I'd just get one of these and spare your wallet.
193440
It depends upon the number of devices that your unit is going to provide power to via its internal battery. Without that knowledge it is impossible to provide you with an answer. My unit states that it will provide approximately 30 minutes of battery backup power. During a power outage it would be supplying power via its internal battery to a notebook, a docking station, a monitor, a phone, a modem and router. Hope that helps.
1385053
Not sure what you mean by that, but it has an adapter that plugs into a regular wall outlet, and it comes with the machine. There's nothing extra to buy, and if you have regular wall outlets in your home or apartment, you should be good to go. It does not have a battery backup, though, in case that's what you meant. Wall current only, no batteries.
500362
Actually you do not need a battery backup for these items. A high quality Surge strip will cover them. The Battery Backups are really meant for computers, phone systems and medical devices that need to stay on during a brief power outage. I use one in my office for the Cable Modem (voice and internet), the Router, my main office PC, and the cordless phone base. I have a couple of these 350's in another office on the phone CPE (basically a modem), the phone switch and internet router. If you do get one think about what gets plugged into the battery side and what is on the surge protected side.
836476
This serves as a battery backup in case the electricity goes out. It is not used as a battery by itself. It is like any UPS Battery Backup-only for emergencies. It will not last long. Besides how will you recharge it if there is no electricity.
1045165
No there isn't a battery backup. The phone will still work during a power failure; you can dial out & receive calls, but the display will be blank & the other keys will not work until power is restored. Hope that helps!
1291234
We use the power supply and not a battery. Last week we had a power outage. When the power returned we simply turned the unit on and everything performed without retuning.