The transmission of data occurs by radio waves, without any physical link between the Contact@ir emitter and the Dongl@ir receiver.
In this way, Dongl@ir facilitates and makes safer the diagnosis of a product often difficult to access, the intervening person not being constained any more to get into a risky situation to reach it.
Dongl@ir is a specific mean of diagnosis. It has to be used nearby the product (80 meters maximum).
Within a few seconds, your product is identified and the result of its diagnosis appears on your sceen.