EU Regulations 2019/947 and 2019/945 set the framework for the safe operation of drones in European skies (EU and EASA Member States). They adopt a risk-based approach, and as such, do not distinguish between leisure or commercial activities. They take into account the weight and specifications...
Registration required if "less then 250g when it is not a toy and it is equipped with a sensor able to capture personal data"
Tello is not a tool, so its a toy. But that may change anytime.
Soon it will be 2021 and the new regulations will be in force.
Classification depends (among weight, speed,..) on the CE symbol.
I find it hard to believe, but on my Tello EDU there is no CE symbol.
I wonder how they can sell the product without a CE symbol.
The manual (something nobody reads) has no "conformity"-section (the one that not even the ones read who otherwise read a manual).
Tello's camera is a tricky thing in terms of regulations. An FPV camera does not count as a sensor to gain personal data. The photo or video is not recorded on-board (probably for this reason). But you can record it on the ground.
Anyway, if you fly any other model aircraft such as a glider or an aerobatic plane, the regulations for drones apply and you have to register and take the test if any of your models weigh 250g or more.
Regardless if you would refer to it as a drone or not. Regardless if it has a camera or not.
I guess not many RC-pilots know. If one of your friends is an RC-pilot, give him or her a hint.
You do not register your models or drones, you register as a person. You have to write your personal registration number on all of your models and drones.