Connection port: With USB2.0 or above Transmission mode: GFSK 2.4GHz wireless, up to 10 meters Transmission frequency : 2400-2483MHZ(16 channels) Transmission Power : Less than +4bd Power supply: Rechargeable polymer Lithium-ion battery Charging voltage: 4.4V-5.25V Charging current: 300mA Operating current: Sleeping current: Net weight: 93g Size : 145*75*13.5mm When charging finishes, pull out the charging cable. Never try to open or repair this product yourself. Keep this device away from fluids, such as water. In the keyboard mode(postive side), we can press the key "Fn" +" Power button " to learn the infrare code. For the details of learning. Pls refer to the following steps. 1. Press the "Fn" +" Power button " and the led starts flashing to indicate that it has entered the infrared learning status. If there is no any operation, it will exit the learning status in 6 seconds.(press the any key can quit from learning status) 2. Close the infrared emitting diode of IR remote control to the top of this product within 5cm. 3. Press and hold the IR key of remote control that needs to be learned. If the study is successful, the led will keep bright for 2 second (Otherwise, please repeat step 3.)and product will quit from IR learning status automatically. - The extension usb cable can be used for charging. It can not be used for digital connection. - Re-pair: If the red LED flash fast , It means the product needs to be paired with usb-receiver. As for how to pair, please contact us, we will provide you with ways to quickly solve the problem. Best customer service: If there are any problems with the product, please feel free to contact us and we will provide you with a solution within 24 hours.
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