... or Mechanical limited Switch 3.2 Leaves motors,1 Control Box 4.300KGS,500KGS,600KG Eurepean Union CE Approved--- ... heat preservationexcellent quality and modern appearance. 2 Wings motors, Remote Contorls, Control Box, Alarm Light, Infrared Photocell, ect as standard specification ... .3). Operating time protection can be setted.4). External Control Box.5). Terminals for Back-up battery(24V DC), ...