Crystal Vision Premium Universal Microphone Kit for Samsung, Lorex, Swann, Q-See, Defender, Amcrest, Zosi, Kguard, etc. (60ft, 100ft, 150ft, 200ft) - 100ft 100ft Microphone Kit (Also available with 60, 100, 150, 200ft cable) This Universal Microphone Kit is Compatible with All System with BNC, RCA Connection 4 Omnidirectional / Low noise and high fidelity / Easy installation High quality sensitive microphone / Will pick up sound up to thirty meters away Can be installed in hidden locations, and till areas!