Detcon Four Channel Relay Card - Manual (Page 6)

4 Channel Relay Card
Four Channel Relay Card Instruction Manual Rev.1.2 Page 2 of 8
1.2.4 Reset Switch Input
The reset/silence switch uses a 2-pin connector (Detcon p/n 306-175701-900). The reset connector allows for
the use of an external, normally-open, momentary push-button switch to reset and/or silence alarms (Figure 1).
When the switch is closed, it will reset any latched alarms or silence any Silenceable alarms.
60%
55%
50%
45%
40%
35%
30%
25%
20%
15%
10%
Enable
ON OFF
CHx
ON OFF
FAULT
ALARM 1
Silencable
Latching
Energized
Latching
Not Used GND
PWR
mA
+ -
External
Power IN Reset
12-28VDC
CHx
ON OFF
ALARM 2
Silencable
Latching
Energized
ON OFF
ALARM 3
Silencable
Latching
Energized
NO C NC
Alarm x
Alarm Relay
Dry Contacts
Channel Input
and Alarm Levels
Alarm
Relay
Settings
Power Input
and Reset
Figure 1 Relay Card Layout
2.0 Installation
1. Mount the Relay Card on standoffs so that there is no probability of shorting out any components on
the back side of the Relay Card. The standoffs should be at least 3/8” tall. The screw size is set for 6-
32.
NOTE:
An enclosure is not included with The Four Channel Relay Card. The Relay Card must be
mounted in a user-supplied enclosure appropriate for the environment in which it will be
used. Typically, the card is mounted inside a fire alarm controller enclosure.