Using the EMAX ELRS E8 remote transmitter is easy. First, insert a compatible 18650 Lithium - ion battery (not included) and charge it using the built - in USB 5V - 1A charging system. You can choose between right - hand and left - hand modes according to your preference. Connect it to other devices via the Micro USB or 3.5mm audio interface. To change the VTX channel, use the smart audio function. When not in use, store it in a dry and cool place. Keep the antenna clean and avoid any physical damage. If the battery runs out, recharge it promptly. Also, don't forget to check for software updates to ensure optimal performance.