This simple automatic emergency light has the following advantages over conventional emergency lights: The charging circuit stops automatically when the battery is fully charged. So you can leave the ...

In many cases, the dimmer presented here may be built into a wall-mounted box containing the light switch. It is intended for use with 240 V incandescent lamps only. When it is fitted, and the light ...

Most drivers simply leave their headlight switch set to AUTO, trusting the car to handle everything. Ironically, this convenience feature can turn drivers into daytime glare offenders or nighttime ...

GlacialLight has added the GL-PIR10C, a versatile infrared motion sensing switch, to its popular range of lighting products. GlacialLight has added the GL-PIR10C, a versatile infrared motion sensing ...

[Dillon] wrote in to tell us about his latest project, an automatic light switch for a the hallway closet in his house. Although this project could probably be done very simply, [Dillon] accomplished ...

Some are obvious while others are not, and many can’t be deciphered unless you look to the owner’s manual. Here is a comprehensive list of what the most common warning lights mean. Check back often, ...

18.3%-efficient perovskite solar cell for automatic light adjustment Chinese scientists have powered two electrochromic devices with a perovskite solar cell based on a hole transporting material made ...