Detcon SmartWireless CXT - Manual (Page 12)

Sentinel CXT
Sentinel CXT Instruction Manual Rev. 1.5 Page 8 of 42
If the Smart Wireless® CXT is ordered with the Relay PCA option, the Relay PCA can be configured to
provide either ‘Wet’ or ‘Dry’ contacts for external annunciator activation.
The ‘Wet’ contact option
provides a nominal 11V Battery Power to external annunciators when an alarm is initiated. These wet relay
outputs are rated for 9-11.1 VDC, 2A max total (A1, A2, A3, and FLT outputs combined). The ‘Wet’
contacts are available on a 5 pin Alarm Connector (Figure 7). These outputs are specifically meant for
external 12V annunciators such as the external A1 C1D2 Horn, which is designed to operate on the unit’s
12V Battery.
‘Wet’:
Relay Connector Ratings
Voltage: 9-11.2 VDC
Current: 2 Amps max through single relay connector (2 Amps max total across 4 connectors.
CAUTION
When utilizing ‘Wet’ contacts, the maximum power that can be drawn by the
annunciators is 2A.
12V Battery Power
12V Return
Relay PCA
NC
COM
NO
FAULT
NC
COM
NO
ALARM 3
NC
COM
NO
ALARM 2
NC
COM
NO
ALARM 1
Enclosure
ALARM 2 (Gray) 3
Alarm Connector
ALARM 3 (Brown) 4
FAULT (BLUE) 5
ALARM 1 (White) 2
GND (Black) 1
1
1
2
3
4
5
Figure 7 External Alarm Connector pin out for ‘Wet’ alarm contacts
The Smart Wireless® CXT is also available with ‘Dry’ relay contacts (Figure 8). Dry relay Contacts allow
the user to control annunciators that operate off an exterior power source that relies on the controller to
provide only contact closure to apply voltage to the annunciator. The ‘dry’ relays are rated for 120-
220VAC/24VDC, 2A max. It is important to note that the ‘Dry’ contact feature utilizes a common return
for all annunciators.