When I am actually sleeping I want a pitch black room, so my concern is that this will emit a small amount of light before it actually goes off....?
1768078
The clock display itself is not bright and is adjustable. You can select 20 levels of illumination to use as an LED nightlight or ambient light (it's enough to fill the room). You can also adjust the sundown simulation from 5 minutes to 60 minutes, at which point the LED lamp will be completely off. The wake up feature begins a slow illumination about 20 minutes before the audio alarm comes on. I usually wake up 5 minutes before the alarm goes off and I'm ready to face the day (sun or no sun).
1768079
Emitting a small amount of light that gradually gets brighter before the alarm goes off is the big selling point of this alarm clock. The time display can be dimmed so it does not emit a lot of light. The light that will wake you up can be configured to come on 30 minutes - 10 minutes before the alarm goes off (I am not sure what the minimum time is and I am at work now so I can not check it). The light gradually comes on and at the programmed wake up time an alarm or radio will come on. So what I like about this alarm clock is that it gently wakes me up as the light gradually gets brighter. I usually wake up before it gets to the audible alarm. Emitting a small amount of light that gradually gets brighter before the alarm goes off is the big selling point of this alarm clock. The time display can be dimmed so it does not emit a lot of light. The light that will wake you up can be configured to come on 30 minutes - 10 minutes before the alarm goes off (I am not sure what the minimum time is and I am at work now so I can not check it). The light gradually comes on and at the programmed wake up time an alarm or radio will come on. So what I like about this alarm clock is that it gently wakes me up as the light gradually gets... » Read More Emitting a small amount of light that gradually gets brighter before the alarm goes off is the big selling point of this alarm clock. The time display can be dimmed so it does not emit a lot of light. The light that will wake you up can be configured to come on 30 minutes - 10 minutes before the alarm goes off (I am not sure what the minimum time is and I am at work now so I can not check it). The light gradually comes on and at the programmed wake up time an alarm or radio will come on. So what I like about this alarm clock is that it gently wakes me up as the light gradually gets brighter. I usually wake up before it gets to the audible alarm. « Show Less
1288212
When the unit is on, there is a small green light that glows (and guides me back to where the bed is when I get up to go to the bathroom in the middle of the night!) - you could probably put a small piece of gaffer's tape or electrical tape over it if it bothers you. Although I am usually quite sensitive to lights in the bedroom, this one doesn't bother me. I keep the unit on my tile floor near the bed so the light is quite low down. If the unit runs out of water the light becomes red. I find the unit quite effective even on low or medium, so it would only run out of water overnight if it started out with a low amount of water. When the unit is on, there is a small green light that glows (and guides me back to where the bed is when I get up to go to the bathroom in the middle of the night!) - you could probably put a small piece of gaffer's tape or electrical tape over it if it bothers you. Although I am usually quite sensitive to lights in the bedroom, this one doesn't bother me. I keep the unit on my tile floor near the bed so the light is quite low down. If the unit runs out of water the light becomes red. I find the unit quite effective even on low or medium, so it would only run out of water overnight if it... » Read More When the unit is on, there is a small green light that glows (and guides me back to where the bed is when I get up to go to the bathroom in the middle of the night!) - you could probably put a small piece of gaffer's tape or electrical tape over it if it bothers you. Although I am usually quite sensitive to lights in the bedroom, this one doesn't bother me. I keep the unit on my tile floor near the bed so the light is quite low down. If the unit runs out of water the light becomes red. I find the unit quite effective even on low or medium, so it would only run out of water overnight if it started out with a low amount of water. « Show Less
203478
It's not really a blue light...but I don't think this is the one you're looking for...it does give off a light that I personally wouldn't want for sleeping.
155388
If you are standing right next to it in a very quiet room, you will hear, not a click, I guess I would describe it as a quiet hum. I really like these, I love coming home knowing the lights come on a 5PM and off by midnight, the home looks so much warmer. I also used mine this year on the outdoor Christmas lights around the house, I get to enjoy the lights while I fall asleep and I know the timer will shut down after midnight. I highly recommend this product. Be careful, there are very complicated and time-wasting similar products, if you want the lights to change hours every day of the week, you can get some really frustrating one. If you are standing right next to it in a very quiet room, you will hear, not a click, I guess I would describe it as a quiet hum. I really like these, I love coming home knowing the lights come on a 5PM and off by midnight, the home looks so much warmer. I also used mine this year on the outdoor Christmas lights around the house, I get to enjoy the lights while I fall asleep and I know the timer will shut down after midnight. I highly recommend this product. Be careful, there are very complicated and time-wasting similar products, if you want the lights to change hours every day of the... » Read More If you are standing right next to it in a very quiet room, you will hear, not a click, I guess I would describe it as a quiet hum. I really like these, I love coming home knowing the lights come on a 5PM and off by midnight, the home looks so much warmer. I also used mine this year on the outdoor Christmas lights around the house, I get to enjoy the lights while I fall asleep and I know the timer will shut down after midnight. I highly recommend this product. Be careful, there are very complicated and time-wasting similar products, if you want the lights to change hours every day of the week, you can get some really frustrating one. « Show Less
1133298
I have had this now for about 4 months. I use the light only for emergencies and for just a few moments. I haven't yet seen any reduction in the amount of light emitted
583436
Hi. I think the light stays on as long as it is plugged in. I don't think it goes out when the device if fully charged, but I could be wrong. To be honest, I never paid attention. It is fairly bright, though. You wouldn't want to charge overnight in a bedroom. I usually plug mine in in the kitchen. Good luck!
647292
No.it puts off a faint light dusk till down. Then when it senses motion, it shines brighter.
1851046
If the room is dark it will turn on anytime. It has to have movement & dark. I love mine!
194108
I don't have exactly large rooms, but they aren't tiny either and it does in fact cover the entire room in the rooms we have. If it gets dark enough in our living room it even cover that entire room also. I have even brought it to the hospital for my son when he lived there for some time, there is always light in there but it still lit up some there too. It's really pretty cool. Definitely worth it :D
580584
The light stays on all night. It's just very dim. Then when it senses motion it brightens. I don't know if its possible to turn it completely off.
1768799
It might be, mine is in the kitchen w/a nightlight. It works great though. I have multiple things in my bedroom that have I indicator lights and I just put some dark nail polish on them, you can still see it glow but it is not bright enough to bother sleeping
453560
You should definitely see a VERY apparent and bright light. If you take it into a dark room and don't see any light coming from the bulb, that means it's not working properly. In fact you shouldn't really even need a dark room, it's bright and you shouldn't look at it directly.
1598291
It will stay lit all night but the light is dim. It brightens nicely when motion is detected, then dims down shortly afterward.
403191
Hello, I have a dimmer switch in my bedroom and I put the switch in the middle and the night light is still on. It's a great night light real bright. I will definitely recommend it.
1952438
It just depends on what you have in the room. Frustrating, I know. But you can't really "see" black light, only the things it illuminates. I would say, just go for it, or buy a nearly identical one at Walmart for $10. If it's too dark, tack a white sheet on one of the walls, and then you'll have plenty of light. You could also buy a regular black light bulb super cheap right now at almost any local store. (all on clearance post-halloween) .... Though it now occurs to me this was probably a Halloween party you were throwing... So I'll just stop talking now.
614739
To be annoying. As long as there is power it's lit. I'm lucky mines in a closet.Put a peice of electrical tape over the light
490046
It has three small LEDs that are lit when it is running- it puts out less light than any of my nightlights and less than the "On" light on my small stereo. I doubt it would bother you but you can always put some tape over them.