Under-cabinet LED lights are powered in a few common ways: hardwired or electric/plug-in AC power, battery-powered models that list installed or required batteries, and rechargeable models with built-in batteries that charge via USB or USB-C.
Many under-cabinet lights include motion-activated auto modes that turn the light on hands-free when movement is detected. Example listings cite detection ranges up to about 19.6 feet with a roughly 120° coverage angle and an automatic shutoff after about 20 seconds of inactivity.
Common mounting options include magnetic snap-on fixtures, adhesive metal plates or strips for nonmetal surfaces, stick-on attachments for puck lights, and hardwired/direct-wire installation. Some plug-in fixtures also offer a plug-to-hardwire conversion kit.
Provided specs in listings include brightness (roughly 40 to 750 lumens across different fixtures), rated lifespan (one example lists about a 30,000-hour life), and color rendering (examples include a CRI of about 90 for accurate color).
Control methods include local controls (push-button on/off), motion-activated auto modes, remote controls for brightness and timers, and smart options—app or voice control—on color-changing smart bar models.