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Manual: System Settings → GPIO Connector

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GPIO Connector

The power connector includes two pins defined for general purpose input and output. These pins are ESD protected. The input tolerance varies between products; see the chart below.

This diagram shows the connector pinout. This is the view into the router (or the rear view of the cable connector):


PinDefinitionCOR IBR1100 SeriesCOR IBR600 SeriesWire Color
2Power9–36 V DC9–18 V DCRed
3Input3 V input high threshold (36 V tolerant)LVTTL digital input with 50K ohm pullup to 3.3 V DC (5 V tolerant)Orange
4Outputcapable of sinking 250 mALVTTL digital output (capable of source/sink of 50 mA)Blue

The wire colors shown are for the power/GPIO cable that is included with the COR IBR1100 Series or available as an accessory. Other wiring setups may have different colors.

The GPIO Connector administration page is used to configure these Input and Output General Purpose I/O pins.

User-added imageUser-added image

Input Pin

The Input Pin can be used to read a value—either high or low—from an external device and either display that value on this administration page (as the Current Value) or cause the router to reset.

Current Value: Displays HIGH, LOW, or IGNORED.

Input Mode: Select one of the following options from the dropdown menu:

  • Default/Ignored: In this mode the input pin is not used.
  • Ignition Sensing: In this mode the router will turn off after the input has been held at low for the timeout period (in seconds). The router will then reboot when the input is returned to high. If the input is held low for less than the timeout period before returning to high, no action is taken. (This option is available for the COR IBR1100/IBR1150 only.)
  • Input Sensing: In this mode the logic state (high or low) is automatically sensed by the router and is readable as the "Current Value".
  • Router Reset: In this mode an external device can reset the router by holding the input low for 10-seconds.

Timeout: When Ignition Sensing is selected, this field sets the number of seconds to wait before the router is powered off. Use Ignition Sensing and Timeout with vehicles. When the vehicle is turned off, the router will stay on for the specified length of time and then shut off (e.g., WiFi stays on for an hour during lunch stops).

Output Pin

The Output Pin can be used to allow an external device to read either whether the router is running or whether the modem is connected.

Current Value: Displays HIGH, LOW, or IGNORED.

Output Mode: Select one of the following options from the dropdown menu:

  • Default/Low: In this mode the output pin is not used and is at 0V (ground potential).
  • Set High/Router Running: In these modes the output pin is logic low while the router is booting and transitions to logic high when the router is fully running. If the router is reset, the output returns to low until the router has fully rebooted.
  • Modem Connected: In this mode the output pin is logic low until the modem has connected to a tower. If the connection drops, this output is set low until the connection is restored.
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