1 / instructions not included so I had to download from the manufacturer's site 2 / commissioning road insufficiently explained in this leaflet should be switched off THEN turn on the tag before sending the first sms activation "begin" and this is not specified => waste of time 3 / Then, it works ... but VERY random way: a) I get a good answer as to the geographical position and b) sending a new query, I receive nothing except c) turning off and on again the beacon, which removes any interest in this equipment.