Suitable for security, education, etc. Features: Video: - Input level Resistance: VS 0.8-1.0Vp-p/75 Ohm - Output level Resistance: VS 0.8-1.0Vp-p/75 Ohm - Bandwidth: 50Hz-5.5MHz - Input Connector: 4 - Output Connector: 1 Audio - Input level Resistance: 2V(RMS)/47K Ohm - Output level Resistance: 2V(RMS)/1K Ohm - Frequency: 10Hz-20KHz 0db - Input Connector: 4(R+L) - Output Connector: 1(R+L) - Switch: Manual - Enclosure: Metal