F21-E1/E1B Wireless Industrial Remote Controller Switches for Hoist Crane Control Hydraulic Lift Car 12-24V DC ,Convenient Operation

. 8 operation buttons, 6 single- speed buttons, 1 start key and 1 stop key. . control points up to 8. . With battery voltage warning device, the power supply is cut off during low power. . Program the button function by computer interface. . Up/down, east/west, north/south can be programmed to interlock or non-interlock. . The spare button can be programmed to star, toggle or normal etc. (Customized)