Samsara sensors automatically connect with the closest compatible gateway—a Vehicle Gateway or Asset Gateway, depending on the sensor and which gateways are installed. A single gateway can also support multiple sensors to build a comprehensive view of the asset’s state.
To attach sensor readings to a specific asset in the Samsara dashboard, you can pair a sensor with a compatible Vehicle Gateway or Asset Gateway. This way, you see those readings in the Samsara dashboard for that asset alongside its gateway data, not only as an unpaired sensor in broadcast range.
If you pin a sensor to a specific gateway, you associate that sensor’s data with that gateway in dashboard reports. Pinning does not restrict the sensor to that gateway for its network connection; the sensor can still connect through the strongest available network connection.
Some sensors can connect to both compatible Asset and Vehicle Gateway models. The following table list the supported gateways for each sensor model:
|
Description |
Sensor Model |
Asset Gateways |
Vehicle Gateways |
|---|---|---|---|
|
Monitor trailer fill status |
Powered AGs: AG24, AG26, AG52, AG53 |
— |
|
|
Temperature and humidity monitoring |
VGs (powered on and vehicle on): VG34, VG54, VG55 |
||
|
Door open and close monitoring for swing and roll-up doors |
|||
|
Monitor the level status of a vessel |
To add a sensor to your organization:
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Activate the device in the Samsara dashboard if you have not already done so.
By default, your sensor connects to the strongest available compatible gateway. To associate a sensor’s data with a specific gateway in dashboard reports, you can pin the sensor to that gateway.
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(Optional) To configure the location of the sensor on a trailer, see the instructions to Configure Sensor Positions.
Sensors that are not connected to an asset or vehicle gateway enter broadcast mode and continue sending their data one-way to all nearby gateways.
Sensors may enter broadcast mode when there is too great a distance between the sensor and the gateway or a physical obstruction between the gateway and the sensor, such as cargo.
Nearby unpaired sensors and sensor readings appear in the Sensors section of the vehicle asset details page.
Pinning a sensor to a gateway associates the sensor’s data with that gateway in dashboard reports. Pinning does not restrict the sensor to that gateway for its network connection; the sensor can still connect through the strongest available network connection.
To pin the sensor to a gateway:
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In the Samsara dashboard, open Settings > Safety > Event Detection.
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Navigate to Devices > Sensors.
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Locate the sensor in the device list, click the more actions ( ••• ) menu, and then click Edit on the device row.
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Locate the option to Pin sensor to a particular Gateway, select the gateway from the list and Save the assignment.
Wireless range and obstacles such as metal, dense cargo, or shielding affect the link between a sensor and its gateway, so the sensor can read weak or go offline after you relocate it, swap vehicles or trailers, or mount it far from the gateway.
If that happens—or you are about to finalize a new install—re-establish a strong link to a compatible gateway before you lock in the mount. For radio connectivity, sensors connect to the nearest compatible gateway and do not stay locked to one gateway. To restore connection, bring the sensor within range and power cycle the sensor or gateway as needed and then re-pair the sensor as needed.
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Remove the sensor from its mount and bring it close to the gateway.
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Check the signal strength indicator. At least one bar is required; three or more bars is ideal.
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If the signal returns, remount the sensor and move it gradually toward the intended location while you watch the signal strength.
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If the signal drops again at the intended location, move the gateway closer to the sensor or reduce obstacles that block radio frequency (RF), such as metal, dense cargo, or shielding.
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If there is still no display or connection, replace the battery if the sensor uses a replaceable battery, or inspect the sensor for physical damage.
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