Features:1. Moderate assembly difficulty: no need to weld the circuit, the terminal connection port is easy to install, and the assembly is easyManual, clear, and efficient assembly;2. High strength: solid material bracket, thickened bottom plate, high-quality all-metal gear steering gear;3. High extension: rich interfaces to expand other sensors and modules;4. Basic programming: Arduinocode based on C language;5. Multiple functional modes: Various functional modes and wifi control.Product parameters:Working voltage: 5vInput voltage: 7-12VMaximum output current: 2AMaximum power consumption: 25W (T=75℃)wifi remote control distance: 10~50 metersServo motor angle range: 0~180°Servo Motor Gear: All Metal GearServo working torque: 2.0kg/CMServo operation speed: 0.12s/60° (4.8V)Package Includes:1 x Servo expansion board1 x Charger for 3.7V 18650 rechargeable battery1 x ESP8266 motherboard1 x ESP8266 expansion board2 x Small screwdriver8 x Gear Servo Metal

1 x Micro head USB cable1 x 18650 rechargeable battery pack1 x Product Manual (link only, no paper)