DIY LM3915 Audio Level Indicator Electronic Production Suite KitDescription LM3915 audio level indicator kit presented two connecting lines Power supply voltage DC 9V 12VPCB Size 62mm x 27mmTwo kinds of instruction modes strip instructions and fire point like instructionsLights provide both vertical and horizontal rows of installationHAL treated padParameters are printed directly on the PCB components without reference to the circuit diagram of the situation can be welded directly very convenient HAL treatment pads solder joints can be better but beautiful Package included 1 x LM3915 Audio DIY Kit