Hiển thị các bài đăng có nhãn LED lights. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn LED lights. Hiển thị tất cả bài đăng

Thứ Bảy, 4 tháng 2, 2017

Product review: Solar Powered Light Motion Sensor 16 LEDs by WBESEV





This light is smaller than I pictured looking at stock photos on Amazon. The lamp area is just 3" across, the entire light is 4.5". It 260 lumens, so it is not very bright. It has three settings off, dim light when no one is around, and bright light when motion is detected.  The unit is sealed and the batteries cannot be replaced or recharged outside the unit. 





To turn the light on you need to use a pin (included) to push into a tiny hole in the rim. This needs to be just one when you want to activate the light.  It motion detection works very well and detection motion reliably.  Mounting hardware is included in the package. 



The light does not have my favorite mode of operation "On only when motion is detected" which uses less power and works better in New England climate as we don't always get long sunny days to fully recharge the battery.



Overall I thought the light was okay, but for my use it was too small and not bright enough too rate higher than okay (3 stars).



You can find it on Amazon by following this link.



Ali Julia review ★★★☆☆



Thứ Bảy, 28 tháng 1, 2017

Product review: Solar Radar Motion Sensor Lights, 48 LEDs



This is a fairly bright solar light. It has three settings off, dim light when no one is around, and bright light when motion is detected.  The unit is sealed and the batteries cannot be replaced or recharged outside the unit.



It  has aluminum alloy finish and has a silver finish. It looks more attractive than black plastic that is common and I have used in the past.



To turn the light on you need to use a pin (included in the package along with hanging hardware) and push it into a very small hole at the top part of the plastic lens covering the LED lights.  This needs to be just one when you want to activate the light.











The template for mounting the light is included in the package as well as the mounting hardware.  It is a nice light but does not have my favorite mode of operation "On only when motion is detected" which uses less power and works better in New England climate as we don't always get long sunny days to fully recharge the battery.



You can find it on Amazon by following this link.





Ali Julia review ★★★★★



Thứ Tư, 25 tháng 1, 2017

Product review: 46 LEDs Waterproof Solar Powered Motion Sensor Lights
































This is a very bright solar light. It has three settings off, dim light when no one is around, and bright light when motion is detected.  The unit is sealed and the batteries cannot be replaced or recharged outside the unit.  I opened it up out of curiosity and including a photo so you can see what it looks like on the inside.



To turn the light on you need to press a button near motion detector and hold it down for a few seconds.  This needs to be just one when you want to activate the light.









Mounting hardware is included in the package.  It is a very nice light even though it does not have my favorite mode of operation "On only when motion is detected" which uses less power and works better in New England climate as we don't always get long sunny days to fully recharge the battery.



You can find it on Amazon by following this link.





Ali Julia review ★★★★★

 




















Thứ Năm, 29 tháng 12, 2016

Product review: Solar Light by Ledlight4u



I live in New England where the sun does not shine 100% of the day so I like the solar lights that have the efficient mode of totally turning off when there is no motion.   I can really tell a different when I use solar lights that waste their batteries on dim light when no one is around.  This light only turn on at dusk and has three modes: off when there is no motion/bright light when there is motion, dim light when there is no motion, bright light when there is motion and always on using dim light after sunset.  The mode is selected by pressing  button in the battery compartment.  The button is not labeled: one press is dim/bright, two presses dim all the time, and three presses bright/off.



This light has a panel with 50 LED lights.  It is reasonably bright.  When I say "bright" what do I mean? To give a numeric measurement of brightness I use a lux meter which measures light intensity. For comparison I took the same measurements with a 60 watt bulb (since we all have a good feel for how bright those bulbs are).  The measurement is made at 19".



1. at 19" a 60 watt fluorescent bulb registers 613 lux

2. the bright mode of Ledlight4u is registers 207 lux

3. the dim mode of Ledlights4u registers 50 lux





 

The light generated by this light is not as bright as a 60 watt bulb, but it is within the range of other similar sized solar lights.



The battery compartment has room for two battery which are included (18650 batteries).



One thing to be aware of is that the battery compartment of this light is not water proof. In attached video you can see that the battery compartment opens with  snap closure rather than screws and there is no silicon gasket around the battery door. Plan to use this light under an overhang or some other protection from the elements.  This is not a problem for me as I have a roof over the light with an angle that lets the sun hit the solar panel. However, this does make placing this light a bit trickier.  Note that if the light does not get enough sun to get recharged the batteries can be recharged in  18650 battery charger.



The light comes with mounting hardware include hollow wall anchors.



You can find it on Amazon by following this link.





Ali Julia review ★★★★★



Thứ Tư, 14 tháng 12, 2016

Product review: ToJane LED Long Swing Arm Desk Lamp



Many LED lamps come with a large number of options for the level of brightness. Frankly, I find that annoying. I just want on and off, I don't want to keep clicking, missing the brightest setting and doing it again.  If you feel the same way this lamp does just that. It has a rocker switch on and off.  It looks like an old fashioned engineering desk lamp with a metal round bulb shade.  It has a regular bulb base and comes with a LED bulb. My lux meter shows that the brightness of his bulb is about the same as 60W bulb.



I measured its brightness with a lux meter at 19" (532 lux) and compared it with a reading I got from a 60 watt CFL bulb at the same distance (527 lux). The spotlight it generates is somewhat smaller than a CFL bulb. It is sufficient to light the entire large format book, but not enough to light my entire desk surface with the same amount of light - the edges of the desk are darker.  In the video you can see it lighting a large book, the book is fully in the light, but you can see the edges of the desk that are not well lighted.  This is a nature of LED lights and to be expected.



The free bulb is 7W LED bulb, the maximum power that his lamp can handle is a 40W LED bulb (which in brightness is similar to 200W incandescent bulb).



This desk lamp comes with a base and a clamp.  It has two joints, nad has a lot of flexibility, but not as tall as my other engineering lamps.  The highest I could raise the shade is 17" from the table.  The third joint that controls the shade can pivot 360 degrees. 











I like the simplicity of this lamp - on/off and takes regular LED bulbs.  No bells and whistles, it just works!





You can find it on Amazon by following this link.





Ali Julia review ★★★★★



Thứ Năm, 1 tháng 12, 2016

Product review: OTUS LED Desk Lamp with Gesture Control









The best feature of this lamp is how flexible it is in position the light.  Its wing span is 38" with three pivot points. One near the base, one in the middle, and one for lamp head itself.  The lamp has a ball joint - the best flexibility of the lamp had I have ever seen - 360 degrees of freedom.



How bright? Brighter than a 60 watt CFL bulb. I measured its brightness with a lux meter at 19" (1150 lux) and compared it with a reading I got from a CFL bulb at the same distance (527 lux). This lamp was significantly brighter. The spotlight it generates is somewhat smaller than a CFL bulb. It is sufficient to light the entire large format book, but not enough to light my entire desk surface with the same amount of light - the edges of the desk are darker.  In the video you can see it lighting a large book, the book is fully in the light, but you can see the edges of the desk that are not well lighted.  This is a nature of LED lights and to be expected.



The lamp has touch-less controls (on/off). The lamp uses an infrared sensor switch and I just need to wave my hand in front of it to turn it on.





This lamp has several modes of brightness. In general, I do not like lamps that require me to cycle through many options. This lamp has many options, but I can pre-set your favorite settings so I don't need to cycle through all the options. When I turn it off it remembers my choices.



Assembly tip: the base has a screen which needs to be loosened and then tightened after the arm is inserted into the base.  This holds the arm securily attached to the base.



To summarize: I like its brightness, I like the long neck and that I can re-position it in many way.



You can find it on Amazon by following this link.



Ali Julia review ★★★★★



Thứ Hai, 28 tháng 11, 2016

Product review: ToJane Clamp LED Desk Lamp



This desk clamp lamp comes with two different clamp options.  It has two joints, one section is 15.5" and the second section is 16".  The third joint controls the head of the lamp and it can pivot 360 degrees. It can be moved up and down and side to side.  The best feature of this lamp is how flexible it is in position the light. 



How bright? The light has three level of brightness. On its brigtest setting the amount of light it produces is similar to a 60 watt CFL bulb. I measured its brightness with a lux meter at 19" (bright mode is 565 lux, medium 227 lux, and dim is 91 lux) and compared it with a reading I got from a CFL bulb at the same distance (527 lux). The spotlight it generates is somewhat smaller than a CFL bulb. It is sufficient to light the entire large format book, but not enough to light my entire desk surface with the same amount of light - the edges of the desk are darker.  In the video you can see it lighting a large book, the book is fully in the light, but you can see the edges of the desk that are not well lighted.  This is a nature of LED lights and to be expected.









The lamp has a nice large touch control. I like that it is large and position on top of the light panel. It is easy to reach and easy to control.



Assembly tip: the base has a screen which needs to be loosened and then tightened after the arm is inserted into the base.  This holds the arm securily attached to the base.



To summarize: I like the long neck and that I can re-position it in many way.



You can find it on Amazon by following this link.



Ali Julia review ★★★★★



Thứ Năm, 24 tháng 11, 2016

Product review: OTUS LED Desk Lamp with Gesture Control










 Review update:  I originally wrote this review in September 2016. I liked the lamp with the exception on one feature, it beeped every time I changed the brightness or turned it on/off.  I saw that several other reviewers made comments about the beeping noises. The manufacture was very responsive and the beeping sound was removed from all lamps starting November 2016.

In my video you see the original release of the lamp that still beeps.





My original review follows:



This lamp is similar to engineering lamps. It strongest feature is that it is very bright. How bright? Brighter than a 60 watt CFL bulb. I measured its brightness with a lux meter at 19" (1117 lux) and compared it with a reading I got from a CFL bulb at the same distance (527 lux). This lamp was significantly brighter. The spotlight it generates is somewhat smaller than a CFL bulb. It is sufficient to light the entire large format book, but not enough to light my entire desk surface with the same amount of light - the edges of the desk are darker.



The lamp has touch-less controls (on/off). The lamp uses an infrared sensor switch and I just need to wave my hand in front of it to turn it on. This works reliably, however what I do not like that it beeps every time I turn it on or change modes. It is an unpleasant high pitched sound and I have not found a way to turn it off. (If someone figured out how to do it, please leave a comment with a tip!)



This lamp has 12 modes of brightness. In general, I do not like lamps that require me to cycle through many options. This lamp has many options, but I can pre-set your favorite settings so I don't need to cycle through all the options. When I turn it off it remembers my choices.



The lamp has a long neck that can be adjusted in many ways. The base is very heavy and stable.



Initially I thought the lamp's arm comes out too easily out of the base.  However, this was before I discovered a screw that need to be tightened at the base that secures the arm in the base.





To summarize: I like its brightness, I like the long neck and that I can re-position it in many way. I do not like that it beeps every time I touch a control.





You can find it on Amazon by following this link.





Ali Julia review ★★★★★



Chủ Nhật, 6 tháng 11, 2016

Product review: LED Light Outdoor with Remote Solar Panel by Falove



















What I like about this light is that the solar panel can be mounted quite far away from the light.  This means I can put the light under the eave where it is needed where the light is always in the shade, but the panel can be quite a distance away where it is exposed to the sun.



The light is photo sensitive and it turns on only at night, but it is not motion sensitive it is always on.

It gets dark now around 6pm and I see that it is produces light at midnight, but when I woke in the middle of the night the light was off that it drains the battery in the middle of the night. 



The light is fairly bright. To give you a better idea of what I mean by "bright" I used a lux meter (it measures light intensity) to measure the light it generates and for comparison also measured a 60 watt CFL at the same distance.



The lux meter shows that this light registered as producing 806 lux, for comparison the 60-watt bulb registered as 527 lux.



Overall, pretty good light. I would find it useful if it was motion sensitive so it could produce light all night long when needed, but it does provide good amount light for at least 6 hours.





You can find it on Amazon by following this link.



Ali Julia review ★★★★☆









Thứ Hai, 24 tháng 10, 2016

Product review: KINGSO E27 12w LED Infrared Motion Detection Light Sensor PIR Warm White Bulb





This is bright LED bulb (on par with a 60 watt CFL bulb). Its unique feature is that it is motion activation, but unfortunately motion activation does not work reliably in my bulb. I did see it come on a few times but most of the time I can wave my hand in front of it and nothing happens. When it turns on it does not stay on for a long time (less than a minute) even if I am constantly moving under the light. So the motion detector does not work if the light is on, and most of the time does not detect motion when the light is off. Flipping the switch seems to help sometimes but not all the time.



I liked its brightness, but since motion detection does not work reliably I did not find this bulb performance acceptable.



Update October 30, 2016.

I received a replacement bulb which works reliably when plugged into the desk lamp.  The desk lamp is 8 to 10 inches away from the motion. However, when I moved the bulb to the tall floor lamp that lights the living room where I wanted it to light up when someone entered the room it did not work.  This lamp is tall so the motion is always several feet away from it.  I am upgrading the rating from 1 star to 2 stars from "I hate it" to "I don't like it".



You can find it on Amazon by following this link.



Ali Julia review ★★☆☆☆