Experts say the answer depends on the type of lighting, how long lights are left on, and whether smart systems are in place.

There are as many varieties of smart light switches (and dimmers) as there are light bulbs, and while the prospect of upgrading your old dumb switch might seem daunting, they’re usually pretty simple ...

A light switch faceplate that’s warm to the touch is a sign of an overloaded circuit. If you have a lighting fixture with ...

A light switch is no longer just a light switch, with devices like the new Aqara Smart Wall Switch H2 programmable to control IoT devices.

Historically, leaving a light on (or candle or gas lamp burning) is a sign that someone is home and awaiting your arrival. It connotes the end of a journey and breathes familiarity, a safe harbor. In ...

Dusk-to-dawn light bulbs turn on at dusk and turn off when daylight breaks, detecting the change in light using a photocell ...

Is your Samsung TV not turning on, but the power indicator light is still illuminated? It may be as simple as resetting some ...

Households across the UK are being urged to switch off their lights and close windows this month - thanks to the surge of an insect pest that’s driving people crazy. Daddy long legs numbers are ...

Windows 11 is finally getting a new feature that allows you to automatically rotate between light and dark themes.

Vehicles have three kinds of oil lights, and each means something different. So when they come on, how long should you wait ...

Researchers have created new light-controlled tools that respond to blue light with pinpoint accuracy, offering safer, more precise treatments in the future.

Is your Instax Mini 9 not turning on or ejecting film? Follow these quick fixes to restore your instant camera in minutes.