Discover A-OK Big Torque USB-C charging port #BatteryPowered Motor! AM35D-6/20-ES-E(6Nm,20rpm) AM35D-3/25-ES-E(3Nm,25rpm) Motor Features Concealed antenna (neat design) (Innovative point , Slim motor head) Both RF and Zigbee antenna are built-in hided inside the motor head. RF communication range can reach 80meters, neat design and not affecting performance. Mechanical power on/off switch Mechanical power on/off switch can cut off the power during transportation and extended the storage time up to 1.5 year Reserved bracket adaptor hole Reserved two bracket adaptor holes on motor head, which can largely be compatible with different system. Genes Housing design (short motor) (Innovative point , integrated design) Combined the control board and battery pack in one space, which will make motor very short,and the specific housing case make motor higher safety level! USB-C charging port Adapt the USB-C most popular charging port, following energy eco-friendly rules, make the best compatible. Wide voltage Solar charging solution Solar charging voltage fluctuate with the sunshine strong and weak. This motor can accept 5V-20V wide range solar charging. Speed adjustable Motor can do speed adjust. Higher speed/normal speed and quiet running speed RF+Zigbee 3.0 combo chipsets,  Multiple control way Bi-directional communication Motor with built in RF and Zigbee two chipsets, which can be control by RF remote and connect to APP via Zigbee signal.