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Chapter 2: Description
65-2646RKS-SW M2A Transmitter Operator’s Manual
Chapter 2: Description
Overview
This chapter describes the components of the M2A transmitter. The transmitter is a 4 - 20 mA
type detector head. It consists of the CO detector, terminal PCB, and the junction box.
External Description
This section describes the junction box and all external components of the M2A transmitter.
Figure 1: M2A External Components
Junction Box
The M2A’s cast aluminum junction box is dust and weather resistant. The junction box also
protects the M2A and all connections made to it. Use the three 3/4 NPT conduit hubs to mount the
detector to the junction box (factory installed in the bottom port) and connect wiring from an
external device, typically an RKI controller. The top hub is shipped with a factory installed and
sealed conduit plug to avoid leaks into the junction box. If necessary, the conduit plug can be
removed and the top hub can be used for wiring.
Magnetic
Wand
Junction Box Cover
Detector
Mounting Slot (2x)
Window
3/4 NPT
Conduit Port
3/4 NPT Conduit Port, Plugged
