4pcs PWM DC Motor Speed Controller - 18-15V 2A 30W Max Product description Precise PWM Speed Control & On/Off Switch This controller allows for smooth and precise speed regulation of DC motors using Pulse Width Modulation (PWM). It features a convenient power switch to easily turn your motor on and off without disconnecting the power source. Wide Input Voltage Range (1.8V-12V) Versatile for various low-voltage applications, this controller operates with a wide DC input voltage range from 1.8V to 12V. The output voltage is adjustable from 1.8V to the input voltage level, making it suitable for a broad spectrum of small DC motors. 2A Max Current with Auto-Recovery Protection Safely drives motors drawing up to 2A of current. It is equipped with a self-recovery fuse that automatically disconnects the circuit in case of over-current or a short, and resets itself once it cools down, ensuring reliable and protected operation. Robust Build for Long-Term Use Designed for durability, this module can operate in temperatures from -10°C to 70°C and boasts a long service life of over 100,000 cycles or 100,000 hours of continuous operation, making it a dependable component for your projects. Compact and Square Design With a minimalistic footprint of just 32mm x 32mm, this compact board is easy to integrate into various DIY setups, robotics, and other compact electronic applications where space is limited.