
SENTRY1 TECHNICAL MANUAL VER1.6
Safety Note : The earth wire from the cabinet lid should be connected to the cabinet base
and then to the earth connection in the building. This should be checked for continuity.
An earth connection should also be fitted to the door panel stainless steel facia using one
of the studs provided.
TESTING THE INSTALLATION
- Check all the connections have been made correctly and then power up the system.
- Call all the apartments in turn. Check for call tone to the apartment, speech in both
directions and lock release.
- If the volume of speech needs to be adjusted, this can be done by adjusting the presets
on the rear of the amplifier at the door panel as shown on page 3.
- If the call tone volume needs adjusting this can be done at each handset (Three
position slide switch on the telephone).
- Check the fireman switch (If fitted).
- Set the time clock on/off times (Use the instruction supplied with the time clock). Check
the trade button only works when the time clock is on.
TELEPHONE CONNECTIONS COMPATIBILITY CHART
AUDIO TELEPHONES
MODEL Transmit
Speech
Receive
Speech
Call
Tone
Lock
Release
Ground Trigger +12V Door
Monitor
3121
1 2 T P - C N/A N/A
3123
1 2 T P - C + N/A
3125
1 2 T P - C +12 D
3126
1 2 T P - C +12 D
924S
1 2 T P - C N/A N/A
924MSL
1 2 T P - C + N/A
940MS2L
1 2 T P - C +12 D
940ST
1 2 T P - C +12 D
524S
1 2 4H or 4L 5 7 6 N/A N/A
524MS
1 2 4H or 4L 5 7M 6 N/A N/A
524MSL
1 2 4H or 4L 5 7M 6 + N/A
526ST
1 2 T P - C + D
500MM
1A 2A T/4 NO/P GND C/6 +12 N/A
VIDEOPHONES
MODEL TX
SPEECH
RX
SPEECH
CALL
TONE
LOCK
RELEASE
AUDIO
GND
Trig VIDEO
GND
+ IN
VIDEO
VID
SIG
+12
IN
+12
Out
Door
Mon.
901D
1 2 T P - C M +20 V&M N/A +12 N/A
3313
6 7 15 5 8 14 8 4 11&12 18 1 13
APARTMENT STATIONS
MODEL SELECT SWITCHED
12V
TALK
BUTTON
LOCK
BUTTON
AUDIO GND +12V
SUPPLY
DOOR
MONITOR
500
4 2 6 1 3 5 N/A N/A
500M
4 2 6 1 3 5 + D
500ST
4 2 6 1 3 5 + D
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