
PAGE 11 of 29 SENTRY TECHNICAL MANUAL VER1.6
500M
The model 500M apartment station includes a push to talk button, door release button and
push mute switch with LED and door open LED. The Intercom 3 PCB must be used when
using this apartment station.
500ST
The model 500ST apartment station includes a push to talk button, door release button
and timed push mute switch with LED and a door open LED. The Intercom 3 PCB must be
used when using this apartment station.
Connections:
Function
4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground
+ 12Vdc to power mute circuit
D Switch 0V to trigger door open LED
Connections:
Function
4 Select line from call button
2 Switched +12V to activate
6 Talk Button
1 Lock release button
3 Audio
5 Ground
+ 12Vdc to power mute circuit
D Switch 0V to trigger door open LED
SW4
PRIVACY LED FIXED OR FLASHING
FIXED
SW4
FLASHING
SW4
PRIVACY LED FIXED OR FLASHING
FIXED
SW4
FLASHING
PRIVACY TIMES
TIME 15 MIN 2 HOUR 4 HOUR 8 HOUR
SETTING
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