EP1200 | EMERGENCY PAGING MICROPHONE PANEL PAGE 3
Parts Identification
7. RELAY CONTACT
Triggering the front panel mic switch message or siren shall activate an internal relay. This ports provide a dry contact which
can be used to connect E/M overriding signal or to activate ALL CALL at speaker zone selector. The recommended rating
for the contact is 3A. In case higher rating is required, please use external relay or contactor to accommodate the high
current requirement.
6. REMOTE TRIGGER PORT FOR SIREN
External sensor device such as heat detector or fire alarm interface device can be connected to this unit to activate the
siren. The external device or switch must be voltage free to avoid damage to the unit. Two ways for the external switch to
turn On/Off the siren :
1) A <2s close-then-open to turn On; a <2s close-then-open to turn Off
2) A >2.5s close to turn On, an open to turn Off
5. EXTERNAL MESSAGE TRIGGER PORT
External message player can be linked to it and can be broadcasted to the speakers when this port is triggered. A voltage
free contact is recommended to trigger the message playback.
9. HANDHELD MIC LEVEL CONTROL
This is to adjust the front paging mic volume. It is recommended that the setting is made during testing and commissioning
works.
10. SIREN OUTPUT LEVEL CONTROL
Adjust the siren output to an optimum level during testing and commissiong works.
11. EXTERNAL MESSAGE AUDIO INPUT
The external message playback signal shall be balanced line level. ( e.g: audio from MR1301 )
12. PRE-AMPLIFIER INPUT JACK
Output from pre-amplifier mixer (balanced line level ) is connected to the unit which is normally closed when the unit is not
activated. Triggering the panel shall bypass the signal to allow higher priority audio to the PA system.
13. DATA AUDIO OUTPUT
Audio output from the decoder is balanced line output level. RJ45 connector consists of audio, data and power with the follow-
ing pin configuration:-
Pin 1 - Data A
Pin 2 - Data B
Pin 3 - NC
Pin 4 - Ground
Pin 5 - +24V Supply
Pin 6 - Audio -ve output
Pin 7 - Ground
Pin 8 - Audio +ve Output
8. RS485 PORT
External controls or interface devices shall be able to communicate with the unit.
