LoRa should be described in terms of transmission effectiveness, not transmission speed.

Transmission effectiveness refers to how many successful responses the data polling end receives.

LoRa transmission effectiveness depends on the operating environment and the frequency of polling for data.

Below are various test results at different distances in free open space.

The test method is to send less than 100 bytes of commands from the laptop to poll the sensor for data.

Distance in free open space	100 meters	300 meters	400 meters	600 meters	600 meters
How often to poll for data	Every 2 seconds	Every 2 seconds	Every 2 seconds	Every 2 seconds	Every 1 second
Test duration	5 minutes
Total polls for data	150	150	151	151	300
Total responses	146	148	147	148	296

For example, if receiving fewer responses is acceptable, you could change polling for data every 1 second to polling for data every 0.8 seconds.

So the frequency of polling for data can be adjusted until having the expected results.

	Test equipment 1 laptop 1 x sensor (temperature + humidity) 2 x LR200 (LoRa to serial port)
	Connect the sensor to one LR200 via RS485. Connect the laptop to another LR200 to poll the sensor for data.

 

Test at 100 meters apart.

Test at 300 meters apart.

Test at 400 meters apart.

Test at 600 meters apart.

Poll the sensor for data every 2 seconds.

Poll the sensor for data every 1 second.