RTS PS-20
Manufacturer's documents
RTS PS-20 Party Line Intercom Power Supply Overview
(html) (en)
RTS PS-20 Party Line Intercom Power Supply Specifications
(html) (en)
RTS PS-20 Party Line Intercom Power Supply Datasheet
(pdf) (en)
RTS PS-20 Party Line Intercom Power Supply Technical Manual
(pdf) (en)