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Chapter 2: Description
M2A-XL Transmitter Operator’s Manual
Control PCB
The OLED display and control switches are located on the control PCB. It is installed on top of
the terminal PCB by lining up its three spacing standoffs with the banana jacks in the terminal
PCB mounting standoffs and pushing it onto the banana jacks. The jacks retain the control PCB.
Figure 12: Control PCB Component Location
OLED Display
The OLED display is located at the top of the control PCB. It indicates the current gas reading and
displays messages and parameters in the M2A-XL’s programs.
ENTER
UP/YES
DOWN/NO
ENTER
DOWN/NO
UP/YES
Push Button
Control Switches
Fail LED
Magnetic Switches
Alarm 1 LED
OLED Display
RX LED
TX LED
Alarm 2 LED
M2A-XL TRANSMITTER
RKI INSTRUMENTS