RKI Instruments M2 for 12 VDC - Manual (Page 12)

7 M2 Transmitter Operator’s Manual, 12 V DC Operation
Status LEDs
The M2 includes five status LEDs that are located above the display (see Figure 2).
• Fail LED
The fail LED turns on when the M2 is experiencing a fail condition. A fail condition
can be caused by a detector failure or low detector signal.
• Alarm 1 LED
The alarm 1 LED is on when the M2 is experiencing an alarm 1 condition.
• Alarm 2 LED
The alarm 2 LED is on when the M2 is experiencing an alarm 2 condition.
• RX & TX LED’s
These LED’s indicate data being received (RX) and transmitted (TX) when the M2’s
Modbus output is operating.