RKI Instruments M2A-XL Operator's Manual page 22

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.
Alarm 1 LED Alarm 2 LED
RX LED
Fail LED
TX LED
Magnetic Switches
ENTER
DOWN/NO
RKI INSTRUMENTS
UP/YES
M2A-XL TRANSMITTER
Push Button
Control Switches
OLED Display
UP/YES
DOWN/NO
ENTER
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.
22 • Chapter 2: Description M2A-XL Transmitter Operator's Manual