100V volume control suitable for controlling two loudspeaker circuits (AB cabling) in e.g. offices, department stores, ... The LST 50 AB is equipped with a rotary switch and two 25W energy-saving transformers. It is also available with a mandatory call relay as an option. The metal support plates are screwed onto two standard flush-mounted boxes with a depth of 63 mm. They are prepared for the blind switch cover with rotary knob or for the blank cover of the respective switch range. These parts are available from electrical wholesalers. For the exact order designation depending on the switch range, see the table at the end of the audio electronics chapter.
