Surveillance External Mini CCTV Audio Microphone Miniature design for hidden installation Impedance: 600? Working Voltage: 12V DC; Current; 15 mA Frequency range: 100Hz-5500Hz Monitoring range: Max.50 sq.m Miniature SMT design with built-in IC Audio professional amplifier About the Company Legal Status of Firm: Proprietorship Number of Employees: Upto 10 People Annual Turnover: 40 L - 1.5 Cr