Profile: Digital Control Systems, Inc. designs and manufactures a wide array of control modules. Our range of products include Airsense™ family of CO2 monitors, laboratory grade CO2 sensing solutions, Servomax™ family of DC motor speed controllers, and the Multistat™ line of temperature controller products. Our new model 220 motor speed controlerl is designed for digital speed control of high voltage brushless DC motors directly from 110VAC power.