Functional Description: Compact and attractive design; 4-button control. Thanks to radio frequency technology, the transmission distance is long, omnidirectional, highly sensitive, and without signal blockage. The four buttons can each copy four different chip types, allowing one remote control to control four different types of devices. 433 MHz, transmission distance 50-100 m (in open space) – for a new remote control experience and more convenience in everyday life. High copy accuracy, high copy efficiency, and easy installation and operation. Data code copy errors are eliminated and vibration resistance is extremely low. The secret lies in its strength. 4-channel radio remote control for cars, roofs, garage doors, gates, alarm systems, heating systems, home automation, and more. Features: Working voltage: DC 6V Working current: ≤ 10mA Working frequency: 433.92MHz, other frequencies optional Transmitting power: ≥ 10mW Transmitting distance: 100 meters (open air) Frequency deviation: