I. Working Principles of 4G Industrial Routers

4G industrial routers achieve wireless data transmission in industrial settings through their built-in 4G communication modules. Their working principles primarily include:

1. Data Collection: Gathering data from field devices through serial ports, Ethernet, and other interfaces.

2. Data Processing: Performing data caching, security verification, and other processing tasks.

3. 4G Wireless Transmission: Sending data wirelessly to remote platforms via the built-in 4G module.

4. Parameter Configuration: Remotely configuring router parameters, such as APN, heartbeat packets, etc.

5. Status Monitoring: Monitoring signal strength, data traffic, and other statuses to ensure transmission quality.

II. Key Parameters of 4G Industrial Routers

When selecting a industrial  4G  router, consider the following key parameters:

1. 4G Module Model: Different modules vary in transmission rates, stability, etc.

2. Interface Types: Choose serial ports, Ethernet, or other interface types according to requirements.

3. Operating Temperature Range: Some models can adapt to low-temperature environments of -40°C.

4. Protection Rating: For outdoor use, products with IP66 protection ratings may be selected.

5. Power Consumption Optimization: Optimizing router sleep and wake-up mechanisms to extend backup power time.

6. Intelligent Scheduling: Scheduling data transmission as needed to optimize traffic usage.

7. Remote Management: Flexibly completing remote configuration, debugging, diagnostics, etc.

III. Typical 4G Industrial Router Brands

KEY-IOT: High cost-performance ratio, strong technical capability, and good user reputation.

Overall, brands with balanced technical strength and product quality are more recommended, such as Star Create E-Link and Tek Electronics. Users can choose suitable 4G industrial router brands and product models according to their specific needs.