The first tutorial (in the 1st link below) describes how to transmit 433 mHz code to a 433 mHz device to control an on/off light switch in close proximity together between transmitter and receiver(about a few inches), and the other link (2nd one below) shows a 2KM Long Range RF link kit with an encoder and decoder. Hypothetically, could I rewrite or substitute the 1st sketch from the 1st link for the 2KM long Range RF kit? My objective is to control an on/off switch using a 433mhz transmitter/receiver link kit in open air from a distance of at least 1km. Can I do that here?
1.) 433 MHz RF module with Arduino Tutorial 3
2.) https://www.seeedstudio.com/2KM-Long-Range--RF-link-kits-with-encoder-and-decoder-p-321.html