PWM DC Motor Speed Controller Module 1.8V 3V 5V 6V 12V 2A with POT

From the shop's description

Mini DC Motor Speed Controller provide a speed regulation to your DC brush motor or other DC load. Over Current Protection : (Self-Recovery Fuse) This mini controller will be disconnected automatically if the current is too large and the fuse will recover automatically after cooling. Pulse Width Modulation : PWM The maximum output power: 24W Input Voltage: DC 1.8 V-12 V Current: Lower than 2A Power-On LED light. Size: 32 x 32 x 14 mm Low Voltage Speed Regulator Features: Over current protection. Connect automatically after cooling. DC the motor using a Pulse-Width-Modulated (PWM) DC voltage. Connect to DC power. Never connect to 220 V AC power. Low Voltage DC Motor Speed Controller Adjustable Driver Easy to Install and Operate: Panel mounted,uses screw terminals for convenient and quick wiring. Note: If the continuous current is greater than 0.5A, the 775 motor and the stroller motor will not move. It is not recommended to supply power greater than 12V, such as 12V lead-acid batteries, which may cause damage to the governor.