Features: Each receiving controller can store multiple remotes High confidentiality, storage capacity, stable performance and low power consumption Remote control and manual control are fully compatible Operation is simple and convenient Specifications: Operating temperature: -10 to +50C Operating voltage: AC220V 10%, 50-60Hz Transmission distance: 50-100m Operating frequency: 315 MHz Load power: less than or equal to 500W Suitable for: projection screens, electric curtains, electrical towers, garage doors, extensible doors, etc. Color: White Material: ABS Size: Receiver: 5 x 8 cm Remote control: 4.3 x 12.5 cm Package Contents: 1 x Front Controller 1 x Remote Control Only the above package content; other products are not included. Note: Lighting and different displays may cause the color of the item in the picture to vary slightly from the actual product. Measurement error allowed is +/- 1-3 cm.