1. The fuselage die-casting molding
2. fever slow, vigorously stable, high security, waterproof, explosion-proof and so on
3. Motor has heat preservation protection device inside. when the temperature is too high, the motor automatically cut off the power, never burn the motor
4. Manual clutch, manually off the clutch when power failure, easy to use
5. Limit Switch: Spring Limit/Magnetic Limit
