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65-2670-XX-04 M2A Transmitter Operator’s Manual
Wiring the M2A Transmitter
Wiring the Detector to the M2A
WARNING:
Always verify that the power to the M2A is off before you make wiring connections.
1. Confirm that no power is being applied to the M2A.
2. Remove the detector junction box’s cover from the junction box.
3. Remove the M2A junction box’s cover from the junction box.
4. Grasp the control PCB by its edges.
5. Gently pull until the control PCB is pulled away from the banana jacks. Take care not to pull too
hard and damage the cable which connects the control and terminal PCBs.
6. Let the control PCB hang by the cable. The terminal strips are now visible on the terminal PCB.
The control PCB may be left hanging while wiring is done. If desired, the control PCB may be
disconnected from the cable and set aside while wiring.
7. To maintain the M2A junction box’s NEMA 4X environmental rating and prevent water from
entering the junction box through the conduit hubs, use appropriate construction technique.
8. Guide a two-conductor, shielded cable or two wires in conduit through the top conduit hub of the
detector junction box. To make wiring more convenient, use wire colors that correspond to the
detector wire colors: red and black.
9. Connect the wires to the terminal block in the detector junction box.
10. Secure the detector junction box’s cover to the junction box.
11. Guide the other end of the two-conductor, shielded cable or two wires in conduit through the
bottom conduit hub of the M2A junction box.
WARNING:
If the top conduit hub is used for wiring, be sure to seal the threads to ensure water
does not enter the junction box.
12. To gain access to a plug-in terminal strip for wiring, pull it out of its socket by grasping the wall
between two terminal positions with needle nose pliers and pulling. Be careful not to exert too
much force on the wall to avoid damage to the terminal strip. The detector terminal strip and the
alarm 1 relay terminal strip may be removed by grasping them with your fingers if the adjacent
terminal strips have been removed.
Max Distance to M2A
w/18 Gauge Wire
Max Distance to M2A
w/16 Gauge Wire
Max Distance to M2A
w/14 Gauge Wire
500 ft.
1,000 ft.
2,000 ft.
