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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
times of little longer than usual cause covid but as always very acceptable all as per description sin is not present a row of contacts for the rest 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.
To Sweden, it took less than 10 days and no tax or extra fees. EXACTLY AS DESCRIBED. Good seller/company Thanks.
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