It adopts the digital code signal to control the gear changing and the states of the electric switch.
电子选发器采用数码信号控制换档和电子开关选通，从而克服了机械选发器的弊端。
2
Electric system: Adopt PLC controller which is special used to the construction machinery. It can realize gearcontrol, overload protection for engine, state supervision and trouble indication.
电气系统：采用工程机械专用的PLC控制器，可实现档位控制、发动机过载保护、状态监控与故障提示。
3
The "Zhongli" brand electriccontrol quick gear satellite drive construction hoisting machinery has won the state patent( the patent no. : 99 3 36200.1) ;