RC-A11-II integrated load moment indicator with anti-collision&zone protection system and remote online monitoring system.It indicates real time working states of tower crane and tower crane group both on tower crane and on the online computer.The system adopted full-touch mode of operation,and the most advanced ARM system,higher integration,greater precision data acquisition.The system can show the operator and manager the most comprehensive working states of tower crane in operation. At the same height:the system will auto detect and deal it with if any interference within running radius of slewing mechanism. At the different height:the system will auto detect and deal it with if any interference between higher hook and lower slewing mechanism. The system can set up to 10 different protection zones,prohibit flying over sensitive areas such as power lines,schools,highways,building etc.Try to achieve max.working area of tower crane within ensuring tower crane safety.