sorts of restriction on exterior lighting, both how many watts you're allowed to have and what the ivica si is, -- efficacy. there is a dark sty provision, lots and lots of requirements. people are calling me saying, pete, there is too much light in the city. people are putting up security lights anywhere. those are highly regulated now. you can't just light up anything any more, is that right? >> you can't shine the lights up into the sky and the lights are required to be energy-efficient by code. i think if you use a daylight dense sores and motion sensor combination, you are allowed to use a conventional light with the combination of the sensors. this is a very national efficient light. it takes 70 watts but it probably puts out the equifflant of five times the light that an incandescent light bulb would. >> it lasts for a long time. this is $24,000 replacing a $2 bulb. >> 10 times as long. >> we're going to look at boxes and devices and rings. >> right around the corner. >> we're going to walk over to the devices. >> devices. >> on the way over to this location after talking about energ