How do I know it is on?
288839
When you touch the wand to your skin, if the bulb is working properly, you will hear a low buzz and see a faint orangish light.
288840
It is always on when plugged into an outlet. It starts out with and intensity of 1
1914461
With windows in the daytime you won't really be able to tell it's on. In the dark it will light shed well enough to find something, but not work by.
1880612
Usually. About one time in 20 it does not and I find it still on when I wake up in the morning even though I know noone has been anywhere in the vicinity for hours. It also lacks a bit in sensitivity. Not much competition however.
1597018
It should be a blue light as soon as u hook it up to charge on top of the connection u will see it u can't miss it
1500640
There is a battery indicator on the main screen when on. The light stays on when plugged in
1488143
Yes. It has two ...one to indicate that it's on, and a second to indicate when it's ready.
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.
1227261
The display on the back will always stay on as well as the film indicator on the top screen. To know if it is off go by the screen on top. If all you see is the film load indicator it is powered off.
1298974
The indicator light comes on when it is plugged in and switched to on. When its plugged in but switched to off the light is off.
135924
As far as I know, it must be turned on the charge/show that it is charging.
2023034
Yes, it can be on or off. However even with it on, it is barely noticeable!
1669088
it has a sensor and turns itself on. it runs out of charge during the night. if you don't expect too much from these lights, you should not be let down, careful when assembling. top is fragile. steve
785992
Hard to say without seeing your application but if it's dark the light will come on
318825
Make sure you charge it and also turn it on. The button on the bottom turns it on.
1022913
it doesn't have an on off switch, it's on when you plug it in so I would say it's on when the power comes back on
1405016
No its quite. U don't even know its on. Works great. I love it. It keeps my laptop from getting to hot and shutting down.
2112248
you can turn the backlight off or it or have it on all the time. if off, it will come on with alerts