I have a specific use I need something for. I need something that would go off every 20 minutes continuously for several hours. Would,this work?
1807313
Yes, it would work. You can set both of the intervals to be your 20 minutes (the numbers in the upper and bottom right side of the picture). You can set the number (bottom left side of the picture) to be how many hours you want. You just have to remember that you cannot use say 5 for 5 hours. You have to calculate how many 40 minutes (2 intervals set for 2o minutes) goes into 5 hours which would be 7.50 so I would just set it with a number 8.
1644270
Absolutely! A great timer, I have one on my modem so no one can harm my computer when off at night.
520370
You have to preset times you want something to turn on or off.Won't turn on automatically in 24 hours if someone shuts off.
703296
No, you can only use it to set the number of hours it should stay on before turning itself off.
1249389
I think it is only for setting up the time of switch on and the time of switch off during the day or the week. It may not allow to only set up for running 45 mins.
1780019
No, not really. You can only set it to go off a certain number of hours and minutes from the time that you set it. If it was the same number of hours everyday from when you were setting it to when you wanted it to go off you can just re-start easily to count down again once it has gone off.
1326755
Do a search for a "Tabata Timer". Many, if not most, of those are programmable to alternate to suit your needs.
381040
I don't see why not, set it for turning off at 11:59 then Turn back on at 12:00
48931
No this timer will not work for your needs. You need a cycle timer. I don't know of one that will work on night time setting..
2258273
you could set up a timer on the power supply that is three volts to shut of then back on in 17 min timer this is a sealed computer box. So messing with that not advisable.
624415
Hi Bo, I have used one of these WH21 for the last 25 years. This version of timer is only for controlling on and off in a 24 hour period. It will not help you with the issue that you described. Thanks,Ed
1249390
If you mean that you want to plug a device with a battery into it at an arbitrary time (i.e., a different time each day) and have it automatically shut off after 45 minutes, then no, it won't do that.However, if you mean that you want to plug something into it at night, for example, and let the unit charge it for exactly 45 minutes overnight, then yes -- you could program it to do something like turn on at midnight and then turn off again at 12:45.
762809
I has a timer with a "stay on" option I suppose you could put it on "stay on" and use a wall timer. This thing is very heavy duty. I doubt seriously you'll want to run it 4 hours every day.
1629819
I don't know. It was in my house for an hour and then back in the box. I think it can stay on. The timer may just be an option...
2065897
Set an on time and an off time it should work fine. I use mine for hot curlers so they're ready when I wake up but turn off in an hour if I oversleep.
291323
Probably not, first, you would need a 12 v source for operation and it is not a clock timer, it will time for up to 999 seconds when activated and will stay activated until the signal is removed.
423902
This is not a timer. This turns the appliance off after a certain interval of on time.