NIUNIU Potentiometer: resistance B100K, opening 8MM Applicable voltage: 12V-50vDC (wide range) Applicable current: 30A Power range: maximum 1500w, recommended for use within 12V250W, 24V350W, 48V500W. Speed range: 0%-100% Product frequency: 21KHZ This is not a power supply module, it must be connected to the motor to adjust the speed, and the output of the multimeter will not change if the motor is not connected. The motor can be connected regardless of positive or negative. When the running direction is inconsistent with the expectation, the direction can be changed by adjusting the line sequence. caution: 1. This governor is used for brushed DC motors. 2. Not suitable for speed regulation of DC brushless motor; nor can it be used as a voltage regulator or voltage stabilizer! 3. Can not use 48v battery, battery power supply (48v accumulator full voltage exceeds 50v.) Delivery Quantity: 1pc, Size: 110*76*35mm Color: silver Kind tips 1. Package content: only the above package content, excluding other products. 2. The size is measured manually, please allow 1-2 cm measurement error 3. Due to different displays and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.