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i already use this module to communicate more arduinos togheter, the interface is simple and with perfect line of sight i can communicate with included antenna for around 1.5Km. using internal in a house is perfect for this and with hight baudrate bidirectional. for external usage is good but data trasmitted is low and latency is around 2 seconds, really useful to lanch command to a remote machine. some useful information and command can be found here https://www.elecrow.com/download/HC-12.pdf http://avrproject.ru/112/rf_hc12/2016-01-14_122335_HC-12_v2.3B.pdf attached here is some test of distance
temps de peu plus longtemps que d'habitude cause covid, mais comme toujours très acceptable tout comme le péché de description n'est pas présent une rangée de contacts pour le reste excellent
Very nice item,quick delivery.
it is a good product value for money quality is nice ...
Very well packed, quality is very good. Work very well. Good service and information. price is spot on.
Pour la Suède, il a fallu moins de 10 jours et pas de taxes ni de frais supplémentaires. EXACTEMENT COMME DÉCRIT. Bon vendeur/entreprise Merci.
Verry good wireless communication in long distance
Good shipping perfect conditions
These things work like a charm, and easy to understand with the documentation..
i've purchased 4 before 3 months i've tested them and i bought another 10 for my network of sensors... this product is amazing