Please record the Model and Serial Number in the space provided below. MODEL NUMBER: Operating Instructions SUPPLY Battery supply • Open the battery compartment (fig. 2) and insert as indicated six D-cells. • Remove the batteries if exhausted or if they will not be used again for a long period. The battery supply is switched off when the set is connected to the power. To change over to battery supply, pull out the plug from the MAINS jack. 120 V AC power supply • This set is suited for