Feature: 1. Main Function: This is 10 segment level indicator board, which has been assembled, with level amplification, can be used for preamplifier output level indication. 2. LED Indication: The module is equipped with 11pcs 3mm LED lights, 10 LEDs are used for level indication, and 1 LED is used for power indication. 3. Color Classification: The LED lights have different colors, 7 pcs in green, 3 pcs in yellow and 1 in red, convenient for operation. 4. Good Input Sensitivity: The module has 2 sets inputs with good sensitivity, which is 150mV to 6V rms for low input, 1.5V to 60V rms for high input. 5. Easy Wiring: The LED audio module is easy for wiring, can be connected to preamp or microphone amplifier, speaker, etc. Specification: Item Type: LED Audio Level Indicator Module Material: PCB LED: 3mm Power Supply: 12V 250MA Input Sensitivity: Low Input: 150mV to 6V rms (47K) High Input: 1.5V to 60V rms (470K). Package List: 1 x LED Audio Level Indicator Module