Each system has a dedicated testing circuit. Before the system start, the transmitting system test all switch contacts and receiving system test relays. Only both procedures are passed, then whole system start working.

◼︎ 12 operation buttons (10 single-speed buttons +1 START +1 STOP) ◼︎ 12 control contactors ◼︎ With battery voltage warning device, and the power supply will be cut off duringlow power ◼︎ Safe switch key is to prevent from the unauthorized user ◼︎ Program the button function by computer interface ◼︎ Up/down, east/west,south/north, 1/2, 3/4 can be programmed to interlock or non-interlock.The start key can be programmed to start,toggle switch,normal or other functions.

◼︎ 10 operation buttons (8 single-speed buttons +1 START +1 STOP) ◼︎ 10 control contactors ◼︎ With battery voltage warning device, and the power supply will be cut off duringlow power ◼︎ Safe switch key is to prevent from the unauthorized user ◼︎ Program the button function by computer interface ◼︎ Up/down, east/west,south/north, 1/2 can be programmed to interlock or non-interlock.The start key can be programmed to start,toggle switch,normal or other functions.