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Tandem Wiring Diagram
Relay Models
Models: 9123F, 9123TF, 9223F, 9223TF
Isolated Thermal with
Optional Accessory Contacts
Models: 9123H, 9123HF, 9223H, 9223HF
Limitations
• Maximum of 12 alarms (9123, 9123T, 9123H, 9223, 9223T,
9223H) may be connected together
• Do not exceed 125 ft. between each alarm
• Do not exceed 1125 ft. between the rst and last alarm
• Note: Gentex smoke alarms can not be interconnected
to alarms from other manufacturers
• A maximum of six (6) alarms with a relay may be tandem
interconnected (9123F, 9123TF, 9123HF, 9223F, 9223TF,
9223HF)
Caution
• RED/YELLOW wire to be capped when not in use
• This wire is for tandem connection only
• Do not connect to any other circuit
Relay Contacts Rated Load Resistive
• 1.0 AMP @ 24 VDC
• 0.6 AMP @ 125 VAC MAX
• 0.3 AMP @ 220 VAC MAX
BRN
Smoke
Alarm
Heat
Sensor
Access
Contacts
Alarm
Contacts
Tandem
Power
HF Only
BRN
GRAY
GRAY
YEL
ORN
BLU
VIO
VIO/BLK
RED/YEL
BLK
WHT
GRAYSupervision
Wires
Access
Contacts
Alarm
Contacts
Tandem
Power
GRAY
YEL
ORN
BLU
VIO
VIO/BLK
RED/YEL
BLK
WHT
Quick
Disconnect
Type Plug
1
2
3
1
2
3
1
2
3
120 Volts
60 Hz
Electrical Box
Electrical Box
Neutral
WHT
Tandem
RED /YEL
To additional
Gentex smoke alarms
Hot
BLK
Electrical Box
Smoke
Alarm
Smoke
Alarm
Smoke
Alarm