• 2-Wire System
• Selective Ringing
• Private Conversation
• Lighted Annunciators
• Up to 200 Lines or more
• Night Duty Service
• Apartment Buildings
• Office Buildings
• Hotels & Motels
• Assembly Lines
• Elevator Emergency Systems
MODEL 142A SHOWN
SYSTEM 142 can also replace
obsolete switchboards such as
those manufactured by the
L.J. Loeffler Co.
System 142TM Internal Handset Switchboard System
With continuous product improvement, sizes and other specifications are subject to change without notice.
© 2010 LEE DAN®
COMMUNICATIONS, INC. with all rights reserved
Printed in USA
With Selective Ringing, Private Conversation, and Lighted Annunciators!
System 142TM is a Telephonic Switchboard System for internal communication only. Specifically engineered to provide instant two-way
communication between a switchboard control station (usually operated by a doorman or concierge) and one or more handset stations. Nine
standard models are available from 10 to 120 lines capacity, (models with additional lines are available upon request). The 142 can be used for
apartment, commercial, industrial, professional and emergency applications.
A “Night - Duty” or “Auxiliary Control Station” (Model 149A), is also available. When the switchboard is unattended, all calls can be automati-
cally transferred to the Auxiliary control station. Other features include: Automatic call to the Master with intermittent ringing and lamp annuncia-
tion by simply lifting station handset. Only two conductors needed between Master and each suite station. Master can call one or more stations. Suite
station receives busy signal when Master is occupied. Warning tone sounds at Master, when station completes conversation. Master can receive other
calls through visual annunciation, even while busy talking with another station. All solid state electronics.