# TCP Custom Alerts: how to create them

To create Custom TCP sensors, go to the ‘Alert’ tab of your device.
Then select the Personal Alerts section and then click the ‘Custom’ radio button.

_[Image: Alerts section of the Domotz web app]_

After that at the bottom of the page in the section called ‘**TCP Service**s‘:

TCP Services Configuration Panel

1. The panel shows a list of TCP Services with columns for Mobile and Email settings.
2. The first service listed is "80 • http" labeled as "World Wide Web HTTP."
3. The second service listed is "443 • https" labeled as "Secure World Wide Web HTTP (SSL)."
4. Both Mobile and Email have mute icons next to each service, indicating these settings are disabled.
5. A button labeled “Manage TCP services” is available for further configuration.

If the service you want to monitor is not in the TCP service list, please click the 'Manage TCP services' button to add it.