TELEPHONE SWITCHBOARDS (PMBX)
Suitable for Hotels, Flats and Public Buildings.
Cabinet work of well-seasoned walnut.
Wall pattern central battery switchboard, comprising self-restoring visual signal line indicator (K 8404) which acts for both calling and clearing signals, line jacks (K 8405), double line plugs (K 8408), combined ringing and listening relays, double line cords (K 8457), 4 bar generator (K 8701), 3-inch circular bell and switch, hand combination, etc.
Voltage of battery 18 to 24 volts.
Last revised: February 01, 2011