Features: Easy operation. 4 channels, small size, lightweight and portable. Available in two types, 315MHz or 433MHz, allowing selection based on requirements. Offers reliable transmission distance, functional flexibility, and signal stability. Suitable for use in garage door control, lighting control, electric doors, remote control curtains, lifting equipment, motor control, water pumps, projection screen lift control, and security systems. Safe and reliable performance. Specifications: Material: ABS, PCB Size: Approx. 9.2 x 6.5 cm / 3.62 x 2.56 in Type: 315MHz / 433MHz RF Frequency: 315MHz / 433MHz Package Includes: 1 Set Remote Control Note: Learning methods and steps: 1. Press the receiver learn button – light turns on, indicating learning mode. 2. Press any key on the remote control – light flashes slowly three times, indicating successful learning. To clear saved information: Long press the receiver learn button until the LED flashes five times and then turns off, indicating data has been cleared.