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•10 + 10 Level ( 22 L.E.D. – 2 Blue, 12 Green, 8 Red ) Stereo Audio Level Indicator KA2281 / TA7666 Ready Module Electronic Audio Indicator Suite are supplied by Sai Robotic can be used for a variety of DIY applications to Indicate Stereo Audio Level Indication of Audio device. •Power voltage: DC6V--12V •Light row provides vertical and horizontal installation • Specification: PCB size: Approx. 140 x 38 mm / 5.50 x 1.5 Inches Package Includes: KA2281 / TA7666 Audio Level Indicator Ready Module with connecting wire & report Indicator lights are illuminating devices that are commonly used to show whether or not equipment is receiving power or if it is malfunctioning. Indicator lights can be used in a variety of ways. Brighter than a normal incandescent bulb while using a portion of the power. It casts a brilliant, even light throughout the pilot light's surface. Easily visible even in brightly lit areas. Long-life compare as bulbs indicators. It's easy to use and quick to install. Designed for usage in the manufacturing, tertiary education, and construction industries. Can be employed in high-performance control systems that are simple to set up.