Are you looking to reduce costs? The Microchip Technology pwm fan motor speed TC647EOA stepper motor driver can automate a wide variety of machines to fit your needs! In order to ensure parts aren"t damaged by bulk packaging, this product comes in tube packaging to add a little more protection by storing the loose parts in an outer tube. This motor controller has a minimum operating temperature of -40 °C and a maximum of 85 °C. This device has a minimum operating supply voltage of 3 V and a maximum of 5.5 V.