Wall Unit requires a CR-2032 battery, yet claims non-volitale memory keeps programming during power outages. Which is it? What's battery for?
837128
The battery keeps the clock running, it works because we a lot of electrical outages here.
837129
Battery is for the clock to keep accurate time in the event of a power failure. The program will remain even if the battery dies.
837130
Honestly, I didn't know there was a CR in there but my guess is like an alarm system it will keep the time during the typical short power outages and maybe the trickle of power is what maintains the non-volatile memory. Just get it. It's worth every penny. I've been thru enuff crappy ones to know this is hands down th best one for troubleshooting and intuitive ease of use
395422
CR 2032 for both the sensor and computer. That battery is available at most places that carry batteries i.e. Lowes, Kroger, Walgreens.
34399
The only battery that I know about in this unit is in the remote control. Otherwise it plugs into the wall.
1933314
The unit is powered by using the AC power supply, and it can also be powered using 3 AA batteries, you should use both together, in a power outage it will switch to using the batteries. Also the frequencies are stored in EEPROM non volatile memory, which means that it will stay in memory even when there is no power.Thank you.
1194425
There is no battery backup, however the programming is retained when there is a power outage and when the unit is disconnected.
904743
It uses a Lithium CR2032 battery to store settings when the power goes out or plug is removed. The manufacturer recommends replacing it annualy. The manual is available on the Orbit website: http://www.orbitonline.com/products/Timers/02/01/17/2618/
1825698
I am not sure but I will say that on most devises when you are directly connect to the wall power it overrides the batteries. If you do not have rechargeable batteries you should be changing them every six month to ensure the unit has full power. Good idea to change the batteries with the changing of the EST to EDT.
501600
The safest way would be to put a screw/nail in the wall. The unit has a slotted hole for a device with a head to safely hold the unit to the wall. It is light enough however, to use double sided tape or velcro which would be better than tape. I would reccomend the screw, should you have to change the battery, just pick the unit off of the wall.
1667705
I run this from the outlet, and it's been exceptionally reliant. There's a back-up battery for emergency power outage.
1540730
Batteries to keep program when controller is disconnected from 12volt power otherwise you need to program again
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.
207487
Doesn't have the battery but somehow it keeps memory for short, 30 min power los. I have checked this feature.
77770
It is all a contained unit and there isn't room for another battery in it. I would imagine you could wire one externally and have it beside the unit or behind it in the wall for better appearance. Hope this helps.
780615
The switch portion of the item, the part of the unit you attach to the wall, requires a 9volt battery. The switch screws into the wall or 2-sided tape can be used used. Then the top of the switch, the cover, unscrews giving you access to install the 9volt battery.
1276549
I don't know. I've had one approximately eight years and have not replaced the battery. It only runs on battery when the power is out
1507887
This device uses Permanent Memory without Battery backup. I have cycled the power several times in the 8 months or so I owed it and it holds the settings just fine. Modern memory Integrated Circuits hold their memory state without Battery power.
424982
There is no battery back-up. There is a large capacitor inside the unit, which will provide enough energy to get past short power glitches. The unit does not plug directly into the wall. It has a 'wall-wart', which supplies six volts unregulated, unfiltered DC to the unit. You could easily make a battery back-up, which would plug into the unit in place of the wall-wart as an extended back-up power supply. Here in Florida, the power is subject to recurring interruptions of short duration during summer thunderstorms. The unit has handled these without problems.