RGB LED Color Organ 3 Channel Spectrum Analyzer + 1 meter 5050 RGB LED strip - HK9820 The device is implemented with three filters, for low, middle and high frequencies, three channels. The signal comes through an electret microphone, amplified by a preamplifier. Using the trimmer potentiometer RP1, the input level is adjusted. At the entrance of each filter there is a trimmer potentiometer for adjusting the level of each color - RP4 for High Frequencies /Green/, RP3 for Middle Frequencies /Red/ and RP2 for Low Frequencies /Blue/. Each filter manages different color LEDs.  - High frequencies /HIGH/ - about 3kHz - Green,  - Middle frequencies /MID/ - about 1kHz - Red,  - Low frequencies /LOW/ - about 200Hz - Blue. The device has three channels, three outputs that are controlled by MOSFET transistors. The device can manage up to 15 meters of RGB strip with 5050 LEDs. Supply voltage 12V DC. Power supply is not included. Included 1 meter 5050 RGB LED strip. Overall dimensions PCB - 87mm x 63mm (3.42" x 2.48"). This item Fully assembled (ready built), look pictures. This price for one piece. Package Content: - 100% Brand New in Original packing. - English Instruction Manual. - 1x RGB LED Color Organ 3 Channel Spectrum Analyzer + 1 meter 5050 RGB LED strip - HK9820 Shipping: - All items will be checked before packing. All items are new and of high quality. - We will ship within 1-3 business days upon receipt of payment, excluding weekends and public holidays. - We only send by registered mail or courier, with tracking number. - Delivery time is from 5 to 30 business days depending on the destination. Customer Services: - Please contact us, we will assist you in any way possible and aim to answer all emails within 24 to 48 hours.