Da-Lite Low Voltage Wall Switch Series

The three-button low-voltage wall switch for Da-Lite single-motor electric screens: up, stop, down, one button each, in a single-gang white plate. Hold up or down to drive the screen and let go where you want it, or hit stop to park it mid-travel - which is how a room gets a 16:9 image out of a 4:3 screen without anyone doing arithmetic.

This is the extra or replacement switch rather than a control system in its own right. It works with Da-Lite external low-voltage control units and with screens that carry integrated low-voltage control, so a second position - a lectern wall as well as a door wall - is a matter of running another cable. Da-Lite part number 40975.