Features: Easy to use. 4 channels, small size, lightweight and portable. Available in 315MHz/433MHz options to suit your needs. The device offers a decent transmission distance and is quite flexible in functionality with stable signal. Mainly used in garage door control, lighting control, electric doors, remote control curtains, lifting equipment, motor control, water pumps, projection screen lifts, security industries, and other fields. Safe and reliable. Specifications: Material: ABS PCB Board Size: Approx. 9.2x6.5 cm/3.62x2.56 inches Type: 315mhz/433mhz RF Frequency: 315MHz/433MHz Note: Learning Methods and Steps: 1. Press the receiver's learning key - the light indicates learning mode. 2. Press any key on the remote control - the light flashes slowly three times, indicating successful learning. Clear Saved Information: Long press the receiver's learning button until the LED lights flash five times, then go out, indicating the information has been cleared. Package Includes: 1 Set of Remote Control