How many times did you want to go to a public WC and you have to check if there is someone inside or if the door is just closed? With lightning system it’s easy for you to find that out.
Green means free, red means occupied, no second thoughts.
If you have yellow, well….Houston, we have a malfunction. 
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2 Responses to “Convenient lighting”
hi, care to exchange link ?
i ald added u in my blog as well
good work
abuu’s last blog post..Online Shopping
Hi, I love your blog. I added you to this blog blogroll and to my other blog http://www.buylivebetter.com