Features Good Input Sensitivity The module has 2 sets of inputs with good sensitivity, which is 150mV to 6V rms for low input, 1.5V to 60V rms for high input. Main Function This is a 10-segment level indicator board, which has been assembled with level gain and can be used to display the output level of the preamp. Easy Wiring The LED audio module is easy to wire, can be connected to preamp or microphone amplifier, speaker etc. Color Classification The LED lights have different colors, 7 pieces in green, 3 pieces in yellow and 1 piece in red, convenient for operation. LED Indicator: The module is equipped with 11 3mm LED lights, 10 LEDs are for level indication and 1 LED for power indication. Specification: Item Type:LED Audio Level Display Module Material: PCB. LED: 3 mm. Power supply: 12V 250mA Input sensitivity: Low input: 150mV to 6V rms (47K) High input: 1.5 V to 60 V rms (470 K). Package list: 1 x LED audio level display module. Package List 1 x LED Audio Level Indicator Module