Features: High sensitivity, instantaneous response. The device has decent transmission distance and is quite flexible in functionality, signal stability. Low standby power consumption, high receiving sensitivity, small product size, can be flexibly used in multi-channel control equipment. One receiver can be pair with multiple remote controllers, and a variety of working modes can be adjusted to easily adapt to a variety of different working scenarios. Widely application, can be used in homes, farms, factories, offices, laboratories, supermarkets and so on. Remote control garage door, electric door, house door, shutter door, expansion door, etc. Specifications: Material: ABS Size: Approx. 75.5x34.5x20.6mm/2.97x1.36x0.81in Frequency: 433MHz Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Transmitter Receiver