Features: The method of turning on and off the machine key to learn infrared booting:Press the OK button and the power button of the bluetooth-compatible remote control for three seconds at the same time, release it after the red light is always on. The bluetooth-compatible remote control and the learned remote control, the two remote controls are aligned head-to-head, the distance is no more than 2 cm, press the key to be learned on the learned remote control a few times, the red light of the bluetooth-compatible remote control flashes a few times and then goes out, Learn to succeed. After learning, the switch button of the bluetooth-compatible remote control can be remotely switched. Tip: After learning, the switch button has become infrared instead of bluetooth-compatible, so you need to point the device to remote control when switching on and off. Press the OK button at the same time and the Volume + button until the red light flashes quickly and then goes out, then the learned infrared code value is cleared and returns to the factory settings. Package Includes: 1x Remote Control Specifications: Material:Plastic Size:Approx.160x42mm/6.3x1.65in Net Weight:35g note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.