Amazon Monitron is no longer open to new customers. Existing customers can continue to use the service as normal. For capabilities similar to Amazon Monitron, see our [blog post](https://aws.amazon.com/blogs/machine-learning/maintain-access-and-consider-alternatives-for-amazon-monitron).

# Identifying sensor position
<a name="identify-sensor-position"></a>

Use the mobile app to find sensors in the factory or shop floor without searching through your asset list.

**Topics**
+ [Identifying paired sensor](#finding-paired-sensor)
+ [Missing or unread sensor](#missing-or-unread-sensor)
+ [Permissions and site commissioning issues](#sensor-permissions-issues)
+ [Scanning sensor from another site](#scanning-sensor-from-another-site)

## Identifying paired sensor
<a name="finding-paired-sensor"></a>

1. If the sensor has been [paired](as-add-sensors.md), select the **scan sensor** icon from your asset page to scan any sensor affiliated with your project.  
![Scan sensor icon highlighted in the asset list header.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-icon.png)

1. Select a desired asset to scan.

1. Hold your phone near the sensor and scan it to read its position details. It may take a few moments for the mobile app to generate results.  
![Sensor scan dialog showing phone near sensor with instruction text below the illustration.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-graphic.png)

1. After you've scanned your sensor successfully, your mobile app will show the sensor's position and details.  
![Sensor scan successful dialog with list of scanned assets including Pump-4, HVAC, and HVAC-2.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-success-message.png)  
![Position monitoring interface showing vibration RMS velocity graph over one week period.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-position-details.png)

## Missing or unread sensor
<a name="missing-or-unread-sensor"></a>

 If the sensor is not read during the scan, place your phone correctly over the sensor until you see a success message.

![Dialog box displaying Scan sensor failed error message with Close button.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-unread-sensor.png)


 If no sensor was added, add an asset and try again. 

## Permissions and site commissioning issues
<a name="sensor-permissions-issues"></a>

 If the sensor hasn’t been commissioned for a site, commission the sensor and try again.

![Sensor scan failed dialog with error message and Close button.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-verify-commission.png)


If the sensor was commissioned for a site that you can't access, update site permissions in the app and try again to read the sensor’s position details.

![Dialog showing scan sensor failed error with message about missing site permissions.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-no-permissions.png)


## Scanning sensor from another site
<a name="scanning-sensor-from-another-site"></a>

 If you scan a sensor that is commissioned for another site, and you're redirected to that site, scan the sensor on that site.

![Dialog box prompting to change sites when sensor is detected on a different site.](http://docs.aws.amazon.com/Monitron/latest/user-guide/images/android-sensor-scan-change-site.png)