Sensational Systems have kindley created a set of TTN decoders for some of the old Tabs they are distributing on https://connectedthings.store/gb/
https://github.com/SensationalSystems/smart_building_sensors_decoder
In terms of experience have deployed many 1000s of Tab motion some in use for near two years with 50000+ up links. Like other we’ve seen the odd dead battery also if you have early device they have old firmware and don’t join friendly so end up SF12 sensing a join request every x seconds so battery dead after a week or so. Any device manufactured after Dec 2018 has the later firmware on it and has a join back off strategy so doesn’t kill the battery
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