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Optional Accessories
Product Specifications
Detectors i3 Series of Sensor System
DESCRIPTION:
The 2W-MOD2 allows a control panel to receive a “need for
maintenance” signal from two–wire i3 series smoke detectors,
model numbers 2W–B, 2WT–B, 2WTA–B, and 2WTR–B.
The module uses a form C zone relay to initiate “out of sensitivity”
and “freeze trouble”, a form A zone alarm relay and
a second form A zone relay to indicate loop fault (see Figure
1). An EZ Walk Test puts all detectors on the loop into a Walk
Test mode for easy verification of detector loop wiring.
FIGURE 1
Condition Maintenance Alarm relay Loop trouble
relay (form C) (form A) relay (form A)
Normal OFF Open Close
Loop trouble OFF Open Open
Maintenance ON Open Close
/Freeze trouble
Loop trouble and ON Open Open
Maintenance/Freeze
rouble
Alarm OFF Close N/A
Alarm and OFF Close N/A
loop trouble
Alarm and OFF Close N/A
Maintenance/Freeze
trouble
Terminal Terminal 7 – N.O. Relay connected Relay connected
Location Terminal 8 – Comm between terminals between terminals
Terminal 9 – N.C. 10 and 11 10 and 12
• Allows to use the detectors of 2 wires of the i3™ series with any fire or intrusion of 2 or 4 wires
• Visual signal of maintenance
• Comes with a relay that changes the status when any detector i3 connected to the circuit iDC requires cleaning
• Comprehensive test integral to the circuit
• Indicating LED’s Green, Red, and Yellow