When device is damaged it needs to be replaced by a functional device. The same process is often needed for silent devices, which have not been sending data for a long time.

More specifically there are two types of situations where sensor needs to be replaced:

1. Damaged status / Hardware error at Nwave portal OR in DM App

2. Silent / “Last Message Time Error” in Nwave portal:

   1. not responding to DM app - Replace

   2. responding in DM Ap - 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

Image Added Surface mount sensor replacement

Image Added Flush mount sensor replacement

Replacement using d.nwave.io

In case if you are not going to replace a lot of devices in at a singl time, you can:

• write Write down IDs of old devices and corresponding new devices IDs

• After replacement calibrate new sensors via Device Management app

• when you come are back to the office, you have to open up d.nwave.io console, find old device by ID in the (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 application especially for deveice replacement 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 replace devices, but find problematic devices and replace them but also detect problems. For example, if you are comming 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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