Does this have a power switch or does it not draw power when devices are not plugged in?
189157
It does not have a power switch. I want to say it does draw power when there are no devices connected, but not sure.
189158
It does not have power switch. It does not draw power when devices are not plugged in. Better yet, unplug it when not in use.
189159
This was a major question for me before I bought the inverter. The unit does not have a power switch, and the instruction booklet specifies that when no AC load is connected, battery drain is less than .4 A. I was using the inverter in a fire lookout with solar electric power. The solar regulator had a display that include source and load amperage at the .1 level, and I did several types of testing to see whether there was any apparent drain with no load. I never saw any current from the batteries indicated unless I had something charging. I used a Surface tablet PC, often for hours a day, and charge my camera batteries repeatedly. The inverter performed like a champ the whole time. I hope that answers your question. In case you're interested, the published conversion efficiency (12 VDC -&gt; 110 VAC) is 85%. That's impressive!
670032
There's no on/off switch. Doesn't seem to draw much current so I left it plugged in all the time and didn't bother powering it down.
1456941
This hub gets its power from the computer. If the computer comes backup after power outage the hub will have power. There is NO on-off switch/button on the hub.
903460
This item does not have an on/off switch. Plugging it in powers it up, and unplugging it powers it down.
1421497
It does not have a power switch. It does, however, do a fantastic job of self-powering off when I power down the computer to which it is attached. That is the primary reason I purchase Buffalo's DriveStation drives. I have only used these drives with Macintosh computers.
2149350
I use the USB switch with a powered hub. (The switch has no external power.) If you need a powered hub, I don't know. I changed to using a powered hub and have found the hub more reliable than a non-powered hub.
2039304
Its hard to tell when the power seems to go on and off as there is no light indicating the power is on or an on/off switch. Basically the lights indicating that a device is plugged in comes on (a mouse for example) .. if you don't move the mouse for a while the light goes out, once you move the mouse the light comes on.
1367412
I have the power cord attached to a surge protector and turn it off on the surge protector. Otherwise I don't think there is an on/off switch
542977
Gets power from switched device. I purchased a universal power supply but it made no difference in my case.
1296884
It is not battery powered. It comes with a plugin transformer. Settings are retained in non-volatile memory, so if there is a power interruption, the settings remain intact.
1604552
Hi, It has a power converter that comes with it. It's a regular wall outlet plug in.
1183812
It takes one power outlet and is 3 pronged with test/reset buttons on the side. You'll want it plugged into an outlet by itself though, because when it kicks in it draws a decent amount of power.
2054180
It is powered by plugging it in. The only way to turn off everything is to take it completely out of the wall outlet. As for a similar item with the feature I would suggest a larger surge protector. Those normally have a on/off switch.
379833
No it does not. You would need to add a timed switch to control the power .
606637
There is no power switch on this. I plugged it into a power strip to power it on and off.
1216976
It needs to be plugged in. It's portable and can be moved around the house, but it needs power.
1554828
Yes, the USB charging circuit in this outlet does use power even when nothing is plugged in. I tested by wiring a Mastech MS8264 digital multimeter in series with the hot lead that powers the outlet. With nothing plugged into the outlet, the multimeter read 0.42-0.44 milliamps at 120VAC. Note that this is not a true-RMS multimeter; the actual power draw was probably more like 0.66 milliamps. That's less than 1/10th of a watt, which might be so little that it doesn't matter to you, but it is definitely nonzero and does add up over time. My review contains some more details about power draw: