Installation Instruction: <br><br>Remote Control Pairing: <br>At the same time, press the power button of the remote control and turn signal, when the turn signal flickers three times in red, it means the pairing is successful. <br><br>Turn Signal Installation: <br>1.Take out the turn signal and the fixed support in the packing box, along the grooves, slide the fixed support in grooves and snap the buckle. <br>2.put the loaded turn signal on the bicycle seat tube and tighten it with screws. If it is too loose, you’d better to add a rubber gasket. (the turn signal is suitable for the seat tube size: 25-32mm). <br><br>Remote Control Installation: Take out the remote control and then install it on the bicycle handle, tighten it up with a screwdriver. The remote control is suitable for the handle size: 18-28mm. <br><br>Product specifications: <br>Dimensions (W x H x D): 111.6*30*33.8mm <br>Weight: 125g <br>Waterproof Grade: IPX4 <br>Power Supply : DC 5V 1A <br>Red Warning Light Luminance: 85 lumen <br>Battery Capacity: 2200mAh(bike tail light)/180mAh(remote control). <br>Endurance Time: Work for about 7 hours under constant brightness <br>Charging Time: The charging time is about 2-3 hours. <br><br>Product Included: <br>Intelligent Turn Signal*1 <br>Remote Control*1 <br>Turn Signal Fixed Support*1 <br>Rubber Gasket*2 <br>Micro USB Charging Cable*1 <br>Fixed Screw and Nut for Turn Signal*1 M4 20mm <br>Screw and Nut for Remote Control*1 M5 25mm <br>User Manual*1 <br><br>Tips: <br>1. When the remote is paired with the turn signal, you must wait for the red light to flash three times. Otherwise, it will not be paired and the control distance will be short. <br>2. Please charge the lights in time before the batteries run out,or it will damage the batteries. <br>3. Use the USB cable comes with the light to charge, don't use other cables to charge, otherwise it's easy to damage the device.