If the power goes out, will it switch to battery automatically?
1152068
Yes. In fact, we routinely keep batteries in ours because if the power goes out and then comes back on, it goes to the default sound, the heartbeat, which we find rather creepy.
1447217
No and no need to. It will be auto switch off when no activity detected for a while. Rechargeable batteries are built in and consume little power usually.
97061
The short answer is "yes". But there is a bit more to it.... You would need to leave the unit plugged in and in the off mode during non-use periods and turn it on during the outage. I live in the tropics and power outages are frequent, mine are both plugged in and in the auto-mode all the time. The batteries are long lasting and the light is bright and therefore it is easy to find the unit when the power does go out. I would recommend the units and buy more.
1965792
Why would you want to? Switch off (open circuit an remove power) is the same as a power outage. Light would come on until battery dies.
516175
I plugged it into an outlet that is controlled by a switch. It came back on automatically when I switched it on and off. I'm guessing that means that it will also turn on automatically after a power failure.
2040957
Yes, it will turn on automatically as long as you don't manually turn it off.
1280669
No. It will power down every time in 90 sec. automatically.It works great for me
354034
Yes. Word of warning...if the power goes out, you will need to reset the timer. Also, this product lasted about one year and died on me. Did not replace with another. Went to Lowes and bought one that is digital and has battery backup ($25) seems to work great, but time will tell
641044
Yes, so long as the power stays on it retains its clock and timer settings. The batteries are only to preserve settings in case of a power outage.
1037162
The battery is only used when measuring resistance and continuity, so automatic turn off is not required. Hope this answers your question.
1122028
There is a 'load' power switch in the upper right hand corner that does what you want ... unless you leave the switch ON, there is NO automatic. HTH.
963239
If it is plugged in to AC. Mine is not using battery backup and if the power goes off, the unit goes off.
535634
if the power goes out it will alarm until either, the power is restored, you turn it off, its battery dies. This is a great alarm and I highly recommend it.
2164517
If the light was on when the power went out it will come back on. It will not turn on if the light was off when the power went out.
1387915
In the automatic mode, it will switch to the maintenance mode when the battery is fully charged in order to avoid an overcharging situation. This feature down NOT work in the manual mode.
552539
No, it will not automatically power itself off but it will go into deep sleep mode to save the power after xx minute without any opeartion.
1801580
No. Once it's plugged it will turn on perfectly. Once unplugged, it will turn off and rest.