Mono LED indicator VU meter 12x LEDs Sound Meter - x2 pcs This is a single function indicator designed with discrete elements. The circuitry consists of a level indicator for low frequency signals. The LED indicator is mono type. Input signal is standard - 0.750 V (Low level). VU meter not work speaker output (work only line level signal - 0.500 to 1V). Input level control - trimmer-potentiometer. 12x LEDs. Supply voltage DC - 12 to 15 V (max 120mA), (You can use the car battery). Overall dimensions PCB 105x37mm (4.13"x1.45"). This item Fully assembled (ready built), look pictures. Package Content: - 100% Brand New in original packing. - English Instruction Manual. - 2x Mono LED indicator VU meter 12x LEDs Sound Meter. 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.