3. Alarm system for theftproof, sounds when door is opened manually after it was set (optional)
2. It can be used when out of power which caused by fire because of storage power.
1.Rolling shutter door motor with storage power outside. It can control the rolling door to work normally by Remote Control when out of power, the battery could afford about 20 up and down running of the door.
suitable for the automatic rolling door, low power dissipated and save power |