Manufactured by Dytron Inc of Waltham, MA this unit supplies the necessary supply voltage, cable and connector required to use the CAU or SU6 telephone couplers with the EC-2010, FA2010 or D series dialer. Dimensions are 3" wide x 3" high x 1-1/4" deep and weighs 3.5 ounces. Includes CIU-4, connector to the telephone company coupler and instructions.
