【Adjustment Range 】 Adjust the motor smooth no noise no vibration,with power indication,wide duty cycle adjustment range 【Convenient Speed Control】This speed motor controller With wires to connect potentiometer and regulation switch to control the speed, it is convenient to use. 【Wide Temperature Control Range】It can use to such as electric stove, water heater tune thermal, lighting dimmer, small motor speed, electric iron thermostat, and achieve dimming, thermostats, pressure regulator effect. 【High-end Configuration】This controller uses novel bi-directional high-power SCR. It can be very convenient adjust the current up to 25A, and solve the over current problem of the heating wire resistance is too small in the case of cooling causing good. 【More after-sales service】--We stand behind all of our them with a product guarantee and promise to give you the best in customer care! If you have any issue about the Adjustable Motor Speed Controller Board, please contact us by e-mail, we will try our best within 24 hours to reply.