SmartAlarm Instruction Manual Rev 2
Page 33 of 115
SECTION 5
– HORN RELAYS
HNA & HNB Horn Relays
a
b
a
b
a
b
a
b
PB1
PB2
PB3
PB4
PB5
HNA
HNB
GPA
GPB
HORN SUPPLY
(-) N1
(+) L1
HORN SUPPLY
(-) N1
(+) L1
X1
Two horn relays are provided as standard HNA & HNB.
Any channel within the annunciator can be software configured to
operate the HNA or HNB relay as required.
A volt free contact is available from each relay to switch an external
audible or 3
rd
party device.
The relay is normally de-energised providing a N/O contact to activate
the horn when an alarm occurs.
Contact rating 4A 24VDC (2A 120VAC).
If horn relays are not required the relays can be software selected to an
alternative function. (Group Relay, Pushbutton Follower, Watchdog
Function)