TP-Link Portable Wireless Router, Provides Internet Access For Standalone CCTV / Alarm Systems Via Mobile Device Tethering Or 3G/4G USB Dongle Connection, Hardwired RJ45 Network Port, Micro USB Powered, Compact Design, No Ongoing Charges

Portable 3G/4G Wireless N Router

• Plug in 3G/4G USB modem to share your Wi-Fi connections, the compatibility is assured via years of field tests
• Portable and elegant, providing carry-on wireless connections for business travel and family trips
• 300 Mbps Wi-Fi speeds meet your daily internet needs
• One button switches from 3G/4G, AP and WISP modes, for access internet everywhere
• Power via your laptop's USB port, a USB power adapter or a smartphone charger
• 3G/4G and WAN fail-over backup strategy ensures TL-MR3020 provides a sustained internet connection

Here is how to tether your phone to the device to provide a hardwired network connection for your standalone CCTV / Alarm System:

AP Mode

1. Switch the operation mode to AP and connect the hardware according to Step A and B.

2. Log in the router. For instruction, please refer to How to log into the web management page of TL-MR3020

The Quick Setup Wizard will walk you through the process to set up your router.

3. Select your Time Zone and click Next.

4. Select Repeater/Bridge Mode and click Next.

5. Click Scan to find the network you want to extend. Enter the Password for the selected wireless network if it is encrypted. Then click Next.

6. Either customize your Network Name (SSID) and Password or keep the default ones, and then click Next.

7. Click Save to complete the configuration.

For more detailed instructions visit here

WISP Mode

1. Switch the operation mode to WISP and connect the hardware.
2. Connect your device to the router wirelessly or via an Ethernet cable. The SSID (wireless network name) and password are on the router’s label.
3. Enter http://tplinkwifi.net in a web browser and create a password for future logins.
4. Select your Time Zone and click Next.
5. Click Scan to find the corresponding network of your WISP.Enter the Password for the selected wireless network if it is encrypted.
6. Select Internet Connection Type and enter corresponding parameters. Then click Next.
7. Either customize your Network Name (SSID) and Password or keep the default ones, and then click Next.
8. Click Finish to apply the configuration

For more detailed instructions visit here