Features: 1. Privacy protection 2. Providing smooth and quiet operation 3. Electronic programming limits via transmitter 4. If the power is failure, the receiver still will remain the limit positions. 5. Integrate with Auto home system 6. Single & Multi channel transmitter Technical Data: * Voltage: DC 24V * Radio Frequency: 433.92MHz * Load Capacity: 5kg * Remote range: 30m * Power Supply: AC110-240V Switch Power