ITEM NAME:Mini Audio Microphone Sound Monitor Description: High quality material, stable and durable. Micro-chip design, low noise, high fidelity. Can be used together with to achieve audio and video synchronization to monitor speaking within 5-100㎠¡. Contain dedicated AGC circuit so it is suitable for different types of Mic supervised listening environment. Perfect for bank, prison, examination place, shopping mall, and industry factory, ect. Specification: Length: 460mm/18.11inch Frequency response :100-5500Hz Operating-voltage: 6-12V DC Package Includes: 1 Piece Sound Monitor Note: Due to the light and screen setting difference, the item color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. SKU: ALU0019112364010848.High quality material, stable and durable. Can be used together with to achieve audio and video synchronization to monitor speaking within 5-100㎠¡. 1 Piece Sound Monitor. Micro-chip design, low noise, high fidelity.