4G Interface
The RLTK451 has a mobile/cellular interface that supports 4G/3G/2G for accessing the external network. To view:
- Interface
- WAN
menus should be followed. The 4G connection status will be visible in WAN_4G. You can attempt to reconnect using the Connect button. The LAN network settings can be configured by clicking the Edit button.
Cellular Network Settings
The APN and general SIM card settings for the RLTK451 can be configured in this section. To access the settings menu:
- Interface
- Cellular Network
menus should be followed.
In the Config section, WAN_4G Settings should be selected. After entering the settings, click the Save & Apply button to save the settings.
| Parameter | Description | Default |
|---|---|---|
| APN | Please set the correct APN address provided by the operator. | Autocheck |
| Username | APN username. | None |
| Password | APN password. | None |
| Auth Method | APN authentication type: None / PAP / CHAP. | None |
| Network Type | Specifies the type of network to be used: AUTO / 2G / 3G / 4G. | AUTO |
| Priority of Network Search | Allows you to set the network search priority: AUTO / 2G / 3G / 4G. | AUTO |
| PIN Enable | Enables the SIM card's PIN code. | Disable |
| EHRPD Enable | Enables or disables the EHRPD feature when using a 3.5G network. | Disable |
| Data Traffic Control | 0: Disables network traffic reception. Other values: Alarm when network traffic consumption reaches this value. | 0 |
Ping Detection Settings
In the Config section, Ping Detection Settings should be selected. After entering the settings, click the Save & Apply button to save the settings.
Ping detection is used to check the network status of the device and is disabled by default. After enabling this function, the device will attempt to ping the specified address and will retry after reaching the consecutive failure count. It is recommended to enable this setting to avoid being disconnected from the network by the base station when no data is sent for a long time.
| Parameter | Description | Default |
|---|---|---|
| Enable | Enables or disables the ping monitoring feature. | Enabled |
| Interval | Ping sending interval (5–86400 seconds). | 10 |
| Primary Server | Primary address to ping (IP or domain name). | 114.114.114.114 |
| Secondary Server | Secondary address to ping (IP or domain name). | 8.8.8.8 |
| Max Ping Tries | Retry when the number of consecutive failed ping attempts reaches this value (a value between 1–100 can be entered). | 4 |
Mobile Information
In the Config section, Mobile Information should be selected. Users can check detailed configuration information of their SIM card.
- The unit of signal strength is dBm and ASU. dBm is calculated as -113 + 2 * ASU.
- The RLTK451 supports displaying signal strength via ASU. ASU values range from 0 to 31, and the higher the value, the better the signal strength.