Having one router is enough to set CUJO up in DHCP mode.

You will need to make some configuration changes to your main router.

Your CUJO device needs to be plugged into the primary router.

Firstly, connect one end of the Ethernet cable to the bottom port of CUJO. The bottom port is located above to the power supply socket. Then, connect the other end of the Ethernet cable to an available LAN port on your router.

Your setup should look similar to this:

Now power on the CUJO:

1) Connect power cable to CUJO’s power supply;

2) Plug the CUJO’s power supply adapter  into your wall socket or power strip;

3) Wait until CUJO powers on and CUJO’s eyes are steadily at the top position for at least 10 seconds;

If your CUJO's eyes start blinking, that just means CUJO's firmware is being updated. Do not power off CUJO until the eyes stop blinking and wait until CUJO's eyes are steadily at the top position again.

Now you need to login to the CUJO app and finish the CUJO setup. 

You will need to make some configuration changes on your main router, just tap "Manual DHCP Setup" button and follow these steps:

1) Login to your router on by opening up a web browser and using the IP address of your router (it may be,, or similar by default);

2) Navigate to the DHCP settings (it may be under Setup, LAN settings or Advanced);

3) Turn Off the DHCP server function and save the configuration (if your router does not reboot after this, do it manually);

4) Reboot CUJO (unplug the power supply from CUJO and plug it back in);

Once both devices reboot, CUJO will start protecting all of the devices connected to your network.

If you run into any issues during the setup, we're available to help between

1 AM - 8 PM PST and 4 AM - 11 PM EST via:

Phone: 1-844-438-2856 (US), 44-800-80-21-344 (UK)

Video-call: CUJO app

Email: hi@getcujo.com

Live-chat: www.getcujo.com

CUJO service team