4pcs Mini 1220 Silent Motor with 2-Blade Propellor Fan for DIY Science Projects buy audio bluetooth Parameter Specification Model D2-1 Intelligent wood trim shear Model:STM32F103C8T6 Please check images before 516096040

4pcs Mini 1220 Silent Motor with 2 Blade Propellor Fan for DIY Science Projects buy audio bluetooth Parameter Specification Model D2 1 Intelligent wood trim shear Model:STM32F103C8T6 Please check images before 516096040 Parameter Specification Model D2 1 Intelligent Line Follower Kit Input Voltage 3V DC (2 x AA batteries) Control Method Infrared Line Tracking Motor Type TT Gear Motors (DC 3V) PCB Type Double sided FR4 Board Detection Method Infrared Reflective Sensor Array Assembly Type DIY Soldering Kit Difficulty Level Beginner to Intermediate Recommended Age 10+ (under supervision) Applications: Disconnect the charger before connecting or removing batteries