Features: 1. Belt driven provide quiet and smooth operation. 2. With clutch function, can manually control the curtains when power failure. 3. Adopting the Japanese dyneema strap and Japanese clutch. 4. Opening Direction: One way draw or center opening. 5. Electronic programming limits via transmitter. 6. If the power is failure, the receiver still will remain the limit positions. 7. Integrate with home automation system. Single or Mul-ti channels transmitter. 8. Easy to follow DIY installation instructions. 9. Designed with Reliability and Safety - 24V DC transformer. Technical Data: * Voltage: DC 24V * Load Capacity: 40kg * Max. Length: 6m * Remote range: 30m * Radio Frequency: 433.92MHz * Power supply: AC110-230V Switch Power