Low Noise Audio Recording Surveillance Sound Monitor Pickup - Silver (6~12V)
Color: Silver - Voltage: 6~12V - Frequency range: 200~10KHz - Frequency response: 2.5dB - Rated current: 10mA - Monitor area: 5~150 square meter - Output impedance: 600ohm - Suitable for different types of supervised listening environment such as bank prison examination place etc. - Comes with English user manual