WebRelay-Quad - 4 Relays Module
WebRelay-Quad is a four relays module with a built in web server. It can be controlled via the Internet or a local intranet. Each relay can be turned on, off, or pulsed using the built-in web pages or by running custom scripts from a computer or dedicated controller. No special software or device drivers are required.
The ControlByWeb product line facilitates systems integration by offering Modbus/TCP functionality and simple XML control pages. You can also remotely access your Webrelays by using the CBW Mobile App.
This model has 4 relays (3A@28V). The required power supply is 9-28Vdc. The other model with PoE is mentioned below.
More information is available on the website of ControlByWeb.