Connecting hardwired devices
The panel has five screw terminals, two battery terminals, and two telephone
connections. The screw terminals connect the AC power, sirens, and or hardwired
detectors.
Figure 4: Wiring terminals
1234
5
1 HW1 I/O
2 HW1&2 DC out
3 HW2 in
4 9 VAC in
5 9 VAC in
Program sensors and devices before you install them. Follow the instructions in
“Sensors” on page 31 to add the sensors to panel memory.
The HW1 I/O terminal is dual purpose and can be used for either siren or hardwired
contact connections. The HW2 in terminal is an input only.
Interior sirens
From the factory, the HW1 I/O input is set up for interior siren operation (status and
alarm sounds). The HW1&2 DC out terminal provides the positive (+) voltage.
Note: The total current available from the HW1&2 DC out terminal is 250 mA at up to
120ºF (49ºC). A 24-hour battery standby will be met with a maximum load of 250 mA.
With hardwired siren supervision turned on, sirens connected to HW1 I/O are
supervised and require a 4.7-kohm resistor in the circuit. If this terminal is not used,
turn hardwired siren supervision off.
Hardwired interior siren
Interior sirens must always be wired with a resistor in the circuit. For circuit
supervision, which allows the panel to detect if the siren wire is cut (open), the
hardwired siren supervision option must be turned on.
Note: Do not install the resistor at the panel terminals. This does not provide
supervision of the wire.
Connect the hardwired interior siren (13-374) to the panel using a 4.7 kohm resistor
(included with the siren) as shown in Figure 5 on page 16. The resistor must be
connected across the siren wires as close to the siren as possible.
Simon XT Installation Manual 15
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