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Damaged status / Hardware error at Nwave portal OR in DM App
Silent / “Last Message Time Error” in Nwave portal:
not responding to DM app - Replace
responding in DM Ap - update to the latest version of the firmware, calibrate, check hardware health status in DM app and device calibration messages in d.nwave.io > Raw Messages. If sensor shows healthy but no messages in console, try to check if other sensors nearby are communicating. Place replacement sensor close to sensor in question, calibrate it and see in if replacement sensor can reach the base station.
Mechanical Replacement
You will need a tamper proof Torx20 security screw driver or bit to take the old sensor off the platform (see below) and fix the new one.
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T20 Security (tamper-proof) star bit
 Surface mount sensor replacement |  Flush mount sensor replacement |
Replacement using d.nwave.io
In case if you are not going to replace a lot of devices at a time, you can:
write down IDs of old devices and corresponding new devices IDs
when you are back to the office, open up d.nwave.io console, find old device by ID (main menu: Device Management → Devices
go to a device page
enter corresponding replacement device ID and press button REPLACE
Replacement using a mobile App
Nwave provides an Android app specially designed for quick and efficient device replacement at scale. It is useful when you are physically near to damaged devices and have a few new devices for replacement. This application allows you not only find problematic devices and replace them but also detect problems. For example, if you are coming to a silent device you can determine reason of the problem and possibly you will see that you do not need to replace device but need to improve network coverage.
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