The Control Device screen is where you can quickly control lights and devices using their device codes (also called "addresses" for X10 devices). The codes are displayed on the Status screen.
To control a single device, enter its code in the "Device Code(s)" field. To turn the device on or off, click the corresponding button at the bottom of the screen. If dimming a light, enter the level it should dim to in the "Dim Value" field, select its dim type, then click the Dim button.
To control multiple devices, enter the codes separated by a plus (+) symbol (see the screen below for an example).
Click the All Lights On or All Lights Off buttons to turn all lights on or off, respectively. Click the All Units Off button to turn off lights and appliance devices.
To get to this screen, launch the web interface, then click the Control button beneath the time and date bar (if the option to display it was selected in the Web Site Setup screen).
Click on the graphic below for more information on this screen.