McLelland SW-S1 Instruction Manual

Signal Activated
Automatic Switches
Status
Input A Input B
(Sense)
Model SW-S1 Speaker Level
Automatic speaker and line level switches are suitable for a variety of sound system
applications from large commercial background music and paging systems, to whole
house audio and home theater systems. Speaker level switching is perfect when two
independent sound systems feed a single pair of speakers. Line level switching is ideal
when two different sources feed a single amplifier or mixer input.
Inputs are indetified as Input A and Input B. Input A is the default input and will pass
through to the output when the switch is in the off state. When a source is detected at
Input B, the switch automatically switches Input B to the output. When the signal is
removed, the switch will remain the the "B" state, until the delay time has elapsed, at
which point the switch returns to Input A.
Model SW-S1 Speaker Level Swich provides a 12VDC status output, allowing the switch to
trigger external devices, or power an indicator. This is an open collector output that is
capable of driving up to a 100mA load. Connection is made via a 3.5mm connector,
positive tip.
Model SW-L1 Line Level Switch provides SPDT relay output, which can be used to
trigger external devices. This relay contact will handle 24VDC, 1A load. Connections are
made via detachable screw terminal strip.
Switches require 12VDC, 200mA (max), AC adaptor is included.
12V DC
150 mA
A B
Status
B
Output
Status
(Out)

Instruction Manual

Model SW-L1 Line Level