DC Motor Speed Conroller (PWM)

This a great little controller for adding animations around the layout Using PWM you will have much smoother start then standard DC conrollers Operating rating voltage DC4.5V -35V Output current 0-5A Output power 90W 90 (max) PWM cycle 1%-100%. PWM frequency 20khz Size 30mm x 26mm x 14mm (excluding conrtoll knob) Important note The input supply must be the correct polrity or it may damage the unit. the motor direction can be reversed by swaping output wire over.