LED signal lights operate at what voltage range?

The appropriate voltage range for LED signal lights typically falls into the category of 12 to 24 VDC, which is a common standard for many low-voltage applications. LED lights are designed to operate efficiently within this range, allowing them to function effectively while consuming minimal power.

While some LEDs can indeed operate at lower voltages, such as 3 to 6 VDC, most general-purpose LED signal lights are manufactured to accommodate the higher low-voltage range of 12 to 24 VDC. This range provides a balance between adequate brightness and energy efficiency, making it a popular choice in commercial settings.

In applications where LED signal lights are utilized, understanding the correct voltage range ensures they operate safely and effectively without risk of failure due to under-voltage or over-voltage conditions. The other options presented may signify different voltage requirements specific to other types of devices, but in the context of standard LED signal lights, the 12 to 24 VDC range is most fitting.