Remote garage door opener BS-G9800 Technical specifications: Power supply: 220VAC 50Hz; Motor Voltage:24VDC; Lighting Bulb:10W/24V; Consumption in Stand-by≤10W; Protection Class:IP20; Ambient Temperature:-200C--550C; Operation Speed:12cm/s; Radio Frequency:433.92MHz; Motor output torque:8N.m; Max lift height:2.5m; Max square metre:8m2 Features: 1. Through advanced electrical coding and scanning, precise positioning of door is possible. 2. Smooth start-up and transition rate of motor reduces jerking, ensures that the door operation is quieter, faster and smoother, and extends the life of the motor. 3. Multi-Step force analysis of door operation ensures that if the path of the door is obstructed, it immediately reverses or stops. 4. For additional security, our products use the Keeleq rolling code technology from Microchip, offering 4.3 billion randomly chosen codes. 5. Optional auto closing function, allows for automatic closing of door after three minutes, preceded by 15 second flashing warning light. 6. When opening or closing, the light comes on automatically and remains on for three minutes. 7. State-of-the-art technology, yet so simple to program and use. 8. In the case of power difficulties, an external power supply can be easily connected to the system. 9. Built-in surge suppression ensures that all settings are retained in the event of power loss. 10. Adaptable to extremes in ambient temperature. The system will work safely and reliably within the range of -20 degrees to +55 degrees Celcius.