Description: These Funny 10 Audio Level Indicator LM3915 DIY Kit Electronic Audio Indicator Suite are supplied by ReefLED can be used for a variety of DIY applications. Power voltage: DC9V--12V Two kinds of indicator mode: strip indicator and fire dot indicator Light row provides vertical and horizontal installation Tin-treated pads Specification: PCB size: Approx. 62 x 27mm / 2.44x1.06inch Package Includes: 1 Set of LM3915 Audio Level Indicator DIY Kit