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Sound Clip Modules
"Sound Clip" modules add life to your railroad via sound effects. Place them in buildings, rail cars, or just hidden
behind a rock. The 2.2”L X 1.2”W X 0.7”H circuit board must be protected from the weather.
You can play a single sound track in a continuous loop, or triggered to play only once via a momentary switch
contact. Some examples; you might have one in your sawmill playing a continuous loop of sawing sounds. Or you
could have one in the station playing a station announcement when triggered by a magnet on the locomotive and
a reed switch in the track. We have a
library of sounds
to choose from, but we can program your Sound Clip Mod-
ule to use any MP3 file under 2 minutes in length.
You can also trigger one or more sound tracks using our motion detector. Each time motion is detected it will play
the next sound track in a series of recorded sound tracks, or just the same one each time.
Input Power
Power Terminals “+ -”
7 to 25 VDC, e.g. a 9V battery or a DC
power source. Actually, polarity doesn’t
matter (despite the label). You can pow-
er from track power that reverses polari-
ty.
Control
Switch Terminals “S C”
Short these terminals for continuous play. The sound track will keep looping.
A momentary switch closure will trigger the sound track to play once. Switch can be mechanical or an open collec-
tor output from other electronics to the S terminal. Both devices must share the same common through the Power
Input “-” terminal.
The USB port is for factory programming.
Motion Detector (PIR) Terminals “C P 5”
PIR GND/BRN wire to terminal C (Common)
PIR OUT/RED wire to terminal P (PIR Input)
PIR VCC/YEL wire to terminal 5 (5V Output)
The motion detector will trigger a single sound
track, or if multiple tracks have been recorded, it
will trigger each one in sequence. There will be a
delay to retrigger of 2 seconds or more after the
sound stops.
Output
Speaker Terminals “Spk”
A built in audio amplifier is capable of driving one 8
ohm, 3 watt speaker, purchased separately.
Be very careful with
the PIR wiring.
Make sure the con-
nector is connected
as shown in these
photos.
We have a 12VDC, 2 Amp power supply
available . It includes a 2.1mm Coax
socket to mate with it to
extend wiring as needed to
one or more Sound Clip
Modules.
Optional enclosure with
snap on cover
