Features: With 6 function buttons ;Program the button function by computer software.Note: The remote control needs to be used with the contactor. It cannot be directly connected to a power source. Connecting the power directly will burn the motherboard.Safety: the remote controller is equipped with a safety magnetic key switch for emergency use. The remote control has a battery voltage alarm device that automatically cuts off the circuit when the voltage is insufficient. Up/down, east/west, north/south can be programmed to interlock or non-interlock,toggle and normal etc.Material: Glass-Fiber PA .IP65 Waterproof: It can be used normally under harsh environment such as high oil pollution, high humidity and high dust. Approx 100m(200 meters is customized) Strong penetrability without aiming.