The frequency of reception of this module is about 433.92 MHz, the operating voltage is from 3.5 to 12V, by the way, the signal transmission range depends on the voltage. The transmitter power is 10 MW, which is not bad for its price and size, well, I think more is not necessary.
What is very pleasing in this module is the size and price, both of these factors are really very small, the price of both modules at the time of writing is only 47 rubles, of course it may be slightly different at the time you read this article, so that choose the most favorable time for the order, by the way delivery costs 13 rubles.
The seller promises a range of 20 to 200 m, it all depends on the size of the antenna and voltage, in the comments they write that when powered by 5 volts and a small antenna, the range is 2 meters, so if you need the maximum range, then make the antenna longer and food in the region of 10-12V. I think this module will be very useful to many, both for beginner Arduischiks, and already for professionals in this matter.
Write in a comment how you would use this thing in your projects.
Well, thank you all for your attention and good luck in future projects, friends!
Cost: ~ 47