Product features: This moduel integrated with one internal 5V power supply, meaning when your driving voltage is 7V-35V,it makes 5V of energy board power supply logically; when 5V of energy board power on, please not input voltage to +5V power supply in interface but you can lead 5V voltage for external usage Eg: ENA enable IN1 IN2 to control OUT1 OUT2 ENB enable IN3 IN4 to control OUT3 OUT4 Specifications: Double H bridge Drive Chip: L298N Logical voltage: 5V Logical current: 0-36mA Storage Temperature: -20 to +135 Operating mode: H-bridge driver (dual) Drive voltage: 5V-35V Drive current: 2A (MAX single bridge) Maximum power: 25W Built-in 5v power supply, when the driving voltage is 7v-35 Usage: H-Bridge's are typically used in controlling motors speed and direction, but can be used for other projects such as driving the brightness of certain lighting projects such as high powered LED arrays. How it works: An H-Bridge is a circuit that can drive a current in either polarity and be controlled by Pulse Width Modulation (PWM). *Pulse Width Modulation is a means in controlling the duration of an electronic pulse. In motors try to imagine the brush as a water wheel and electrons as a the flowing droplets of water. The voltage would be the water flowing over the wheel at a constant rate, the more water flowing the higher the voltage. Motors are rated at certain voltages and can be damaged if the voltage is applied to heavily or if it is dropped quickly to slow the motor down. Thus PWM. Take the water wheel analogy and think of the water hitting it in pulses but at a constant flow. The longer the pulses the faster the wheel will turn, the shorter the pulses, the slower the water wheel will turn. Motors will last much longer and be more reliable if controlled through PWM. Package includes: 1x L298N Module