Rev. 1 - 01/98
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Due to continuous product improvement, all colors, sizes, materials,
finishes and specifications are subject to change without notice.
Relay Adaptor (SM400 Series)
The RY401 is an all-call (PAGING) adaptor used to
provide all-call capability for up to 11 master and/or
remote stations when the PAGE function is selected
at any master in an SM400 Intercom System. Con-
nections to the unit are made via a 16-conductor
pigtail which is supplied. The connector is color-
coded, with wiring designations on the unit's case.
Only one (1) RY401 is needed per system, for ALL-
• Easy installation
• Low-voltage operation
• Precision engineering
• Quick and easy plug-in replacement
Dimensions: Height: 5.50" (140mm)
Width: 3.75" (96mm)
Depth: 1.19" (31mm)
Construction: Attractive, flame retardant type
ABS plastic enclosure.
Connections: Wiring pigtail with 16 conductors
11 gang-switched, normally open
IR/OR Series Remote Station(s)
SM400 Series Master Station(s)
ARCHITECTS' AND ENGINEERS'
The all-call relay adaptor unit shall be Alpha Commu-
nications®/Tektone RY401 or approved equal. It shall
provide 11 switched outputs to distribute audio among
all master and/or remote stations in an SM400 Intercom
System. The outputs shall be switched simultaneously
when the PAGE function is selected on any individual
The circuitry shall be housed in an attractive, flame
retardant type ABS plastic enclosure. Connections shall
be made using a wire pigtail (supplied), which may be
unplugged to allow for quick and easy replacement.