Oh, solar energy! The Holy Grail of every ecologist who dreams of sustainability! Back to real life, problems with the efficiency of the cells and batteries still makes this somewhat futuristic technology. But not enough for it to be forgotten by the Chinese. Introduce a Led lamp with sensor and solar energy!
The idea is simple. A Li-ion battery is charged with a solar cell of 0.5 W during the sunny day and night can use this energy to feed some high-brightness leds, connected only when someone triggers the presence sensor.
The lamp is very pretty, made of metal and plastic. Has a small hole on the side where you should put a small tool to turn on or off the operation. Why don't they put a common button I didn't understand!
There's the solar cell. Although you do not need to connect to the AC, the product came with an American adapter plugs. Must have been Chinese error.
The lighting is a little blue, but it is not bad.
See how was installed at the entrance of my mother-in-law's House. Comes with two screws and two wall plugs for installation in masonry.
The manufacturer claims that it can remain in operation for 12:00 followed with just 1 loading day. Let's see how long will it last! Purchased on Banggood, Although it is also possible to find the product on DealExtreme. I let down the two links:
http://www.dx.com/p/icubot-l1-solar-powered-ir-sensor-16-led-white-light-lamp-white-silver-150128