Understanding the LED of Monnit MoWi Wi-Fi sensors

This article will help you understand the behavior of the LED light on Monnit Wi-Fi sensors (MOWI Sensors) in different scenarios.

When Batteries are Inserted

As soon as you insert the batteries there are a few possible scenarios that could happen, but the LEDs will let you know exactly what is happening.

  • One RED flash
    If this happens it means that the sensor cannot connect to a Wi-Fi network. This is caused by one of the following:

  • No network security has been stored in the sensor.

  • There is no open (unsecured) Wi-Fi network.

  • The programmed Wi-Fi network cannot be found.

  • Two slow RED flashes
    If you see this it means that batteries are too low for the sensor to operate. New batteries are needed.
    Two Slow Flashes

  • GREEN flashes
    If you see this, it means that the sensor has found a Wi-Fi network and is authorizing network credentials.

  • GREEN flashes – End on GREEN
    When this happens, it means that the sensor has successfully connected to the Wi-Fi network.

Green Flashes - End on Green

  • GREEN flashes – End on RED
    If you see this, it means that the sensor was not able to complete the authorization. Either the network SSID or security key does not match, or there was some other communication problem.
    Green flashes - End on Red

  • 20 second Red Flash
    If you see this, your sensor may not be able to communicate with your PC. In this case, the sensor may need to be sent to Monnit for repair.

When Tethered to a Computer via USB Programming Cable

When first tethered to the computer the following LED light sequence should be expected: RED, GREEN, OFF, RED, GREEN, OFF.

Once the computer acknowledges the connection, the light should just flash GREEN.

Once the sensor is disconnected from the computer the sensor will try to connect to the Wi-Fi network. You will you see one of the following LED behaviors:

  • It flashes GREEN and ends on GREEN.
    This means it was connected successfully.

  • It flashes GREEN but ends on RED.
    If this happens reconnect the sensor to the computer and verify the network SSID and security key are correct.

During Sensor Operation:

Once the sensor has been set up and operating normally, in order to save battery, the light will not flash.

If you would like to enable the LED for normal operation (visual confirmation of communication). You can do this from the iMonnit Online Portal. When enabled the LED will flash indicating that network communication is occurring and sensor data is being delivered to the online system.



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