This product is compact and performances well.It is easy to install and operate.The range limit is adjustable.It has reverse self-locking function. 

Electrical roll up motor feature:

1. support big power;

2. double limit protection;

3. limited positioning accuracy, higher self-locking performance;

4. increasing anti-condensation system design to ensure the safety of the circuit board;

5. the output shaft to strengthen the process;

6. three-year warranty