Possible causes of this alert

Poor sensor placement

Sometimes a sensor can be slightly out of range. Try placing the sensor closer to the SmartHub or moving the SmartHub closer to sensor. Keep in mind that the SmartHub connection works best when it's centrally located to all the sensors.

Dead battery

Take the cover off the sensor and press the orange button. The light on the sensor should flash. If it doesn't try reseating the batteries or replace them with Lithium Ion batteries. If those still don't work contact us at support@smartac.com

Poor connectivity

This could be a combination of low battery and sensor placement. Please refer to the those sections.

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