- Driving method:electro-mechanical screw driver piston type - Operating Voltage:DC 18V for normal speed/DC 12V for ending speed - motor output:15watt per arm - motor amp:2.1 - piston displace:32cm - piston speed:2.9cm/sec - back up battery:12volt.7AH rechargable - safety clutch:electric current sensing using HI-amp auto-reverse - safety barrier:infrared beam sensor(optional) - electric controller:micro-processor based - temperature:8 to 80 - gear box:three stages plaanetary reducer - manual operation:special released key during power failure - max.wrt of gate:400kg wing with force adjustable - max.length of gate:5meter per wing