Note: The Small EP interfaces for the above four handsets can be also used to connect the door-bell switch (Only connect R2 and R3 to the switch). Then you can start
the door-bell function through the pushbuttons on the handset. However, when the door bell is started, it will disable the EP, which means that both can’t work at the
same time.
6
1
2
3
5
4
7
9
8
10
11
12
13
14
19
15 16
22
23
21
17
1820
legenD:
1. Ring control knob
2. Brightness control knob
3. Contrast control knob
4. Shortcut key
5. Number key
6. Loudspeaker
7. Alarm zone LEDs 1 to 8
8. CRT screen
9. Door lock release key
10. Monitor key
11. Switchboard call key + information LED
12. Answer key + communication LED
13. SOS key
14. Microphone
15. Sensor anti-removal alarm connector
16. Alarm sensors connector (see Wiring diagram 15)
17. Small EP connector
18. Door lock release device connector
19. Master and slave pin
20. Download connector
21. Room number configurator connector
22. SOS alarm connector.
23. BUS connector
321020 - b/w hanDsFree 4”
Indoor handset functions overview
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