OptiChem Heating Mantle Controller, Double Circuit, 30/60VAC Variable Output Voltage, 1A, 60W, (per circuit), 120VAC Supply Voltage. Similar to CG-15009-01, but the voltage output can be adjusted between 30 and 60V. Controller is 8 W x 6 D x 3.7 High. All units are supplied with a 6ft separable power cord, a grounded, 3-wire receptacle and lighted power switch. Controller for use with CG-14000 and CG-14002 Heating Mantles rated at 30 or 60 Volts.