Lora wireless module is a wireless communication module using Lora technology. Lora technology is a low-power, long-distance and low-rate wireless communicationwith 2.4G FPC Antenna technology, which is suitable for Internet of Things applications. The principle of Lora wireless module is to realize wireless communication with 2.4G Antenna through Lora modem. Lora modem adopts a modulation technique called Chirp Spread Spectrum (CSS). CSS modulation technology converts data signals into a series of signals composed of continuous waveforms with different frequencies, which are called spread spectrum signals. At the transmitting end, the CSS modulator multiplies the data signal with a sequence called spreading code to get a spread spectrum signal. At the receiving end, the CSS demodulator multiplies the received spread spectrum signal with the spread spectrum code to obtain the original data signal. 
The working principle of Lora wireless module is that the data to be sent by the sender is modulated by Lora modem and then sent out through wireless channel. After receiving the signal, the receiver demodulates it by Lora modem to get the original data signal. Lora technology has the advantage of long-distance transmission, which can cover several kilometers in urban environment. In addition, Lora technology also has the characteristics of low power consumption, which is suitable for battery-powered equipment. In a word, Lora wireless module realizes wireless communication with 433MHZ Rubber Antenna through Lora modem, which has the characteristics of long-distance transmission and low power consumption, and is suitable for Internet of Things.
