LoRa (Long Range) is a wireless communication technology known for its long transmission distance, low power consumption and strong anti-interference ability. It is particularly suitable for scenarios that require long-term operation and large-scale coverage, such as smart cities and environmental monitoring.
Compared with technologies such as 4G, WiFi, NB (Narrowband Internet of Things) and Bluetooth, LoRa has lower data transmission rate and capacity, but its advantages are:
LoRa supports point-to-point communication and star networking, and realizes centralized collection and forwarding of data from multiple nodes through gateway devices.

LoRaWAN is a protocol layer specification developed based on the LoRa physical layer technology. It defines the data transmission format and utilizes AES encryption technology, significantly improving data standardization and security. The LoRaWAN standard is managed by the LoRa Alliance and recognized by the International Telecommunication Union (ITU) as the global standard for low-power wide-area networks (LPWANs).
Characteristics:
Each country and region has its own legal frequency band specifications. Common ones are: CN470 (Chinese standard), EU868 (European standard), AU915 (Australian standard), US915 (US standard), AS923 (other Asian country standards)
Application areas:
LoRaWAN adopts a star topology. Terminal devices send data to the network server through the gateway, and then forward it to the application platform.

| LoRaWAN | WiFi | 4G | |
| Networking | LoRaWAN gateway | Router | Base stations |
| Transmission distance comparison | Longer | Short | Generally longer distances |
| Transmission rate comparison | Slower | Fast | Fast |
| Power consumption | Low | High | High |
| Data capacity | Amount | Large | High volume |
| Cost | Low | Medium | High (also consider data charges) |
Suitable for single-phase electricity metering, supports LoRaWAN communication, and can realize remote data collection and monitoring.

Designed for three-phase power systems, it has high-precision metering and remote communication functions and is suitable for industrial and commercial scenarios.

This module communicates with terminal devices that do not support LoRaWAN via the RS485 interface using the Modbus protocol. After collecting data, it sends it to the gateway via LoRaWAN, enabling IoT upgrades for traditional devices.

The gateway is responsible for receiving LoRaWAN signals sent by terminal devices and forwarding data to the server via Ethernet. It is the core device of the LoRaWAN network.



| ADW300-LW | ADW310-HJ-D16/LW868 | AWT100-LW | AWT200-LW | ||
| China | CN470 | ADW300-LW470 | AWT100-LW470 | AWT200-LW470 | |
| Part of Europe | EU868 | ADW300-LW868 | ADW310-HJ-D16/LW868 | AWT100-LWHW | AWT200-LW868 |
| Australia | AU915 | ADW300-LW915 | ADW310-HJ-D16/LW868 | ||
| North America | US915 | ADW300-LW915US | ADW310-HJ-D16/LW868 | ||
| Asia (excluding Japan and South Korea) | AS923 | ADW300-LW923 | ADW310-HJ-D16/LW868 | AWT200-LW923 |
