China Two-Way Radios factory 7800 New Model SSB Mobile Radio Multiple Button High Receiving Sensitivity Item No. 7800 Observe the following precautions to prevent the intercom from fire or personal injury. Do not use this unit while driving, it is too dangerous. This intercom is designed to use 24V power supply. Do not place the unit in dusty, damp or splashed areas, nor Place it on an uneven...