Suitable for security, education, etc. Features: - Input level Resistance: VS 0.8-1.0Vp-p/7Ohm - Output level Resistance: VS 0.8-1.0Vp-p/75Ohm - Bandwidth: 50Hz-5.5MHz - Input Connector: 1 - Output Connector: 4 - Power: DC 9V 500mA - Enclosure: Metal