24V electric roller shutter door controller features: 1. power failure normal operation, manual, remote control, anti-theft feature complete; 2. Controller three-body unity, the whole structure is compact, simple and beautiful appearance; 3. motor body using a 24V safe voltage will not cause accidents; 4. Motor smooth, easy fever, low vibration and noise; 5. Door Motor control lines mostly in the electrical control box, leaving only the host power line, low failure rate, to avoid the repair When removing troublesome host and curtain; 6. input voltage requirements less stringent, it can normally be used in voltage instability or low areas. 7. Perfect protection measures, designed output overvoltage, overcurrent, battery voltage, overload protection and other functions quickly and protect DC motors and batteries, ensure that the equipment reliable operation under all conditions.