Button Quik-Link The Button-QL is an LCC Sample Mode compatible indicator/switch unit. When used with an LCC node the switch function and indicator function may be controlled separately over the same I/O channel. The unit is configurable via solder jumpers on the back side. Configuration options include color (R, Y, G, Dark) for each position, dim/bright, and alternate/momentary action. NOTE: You must configure the LED color by selecting at least one of the R, Y, or G jumpers before the LED will respond to commands. Connects via a 3 wire servo style cable to other Quik-Link devices. Snap fits into a 8.1-8.25mm diameter hole. (21/64") Unit is 2" L. Electrically compatible with Berrett Hill Touch Toggle bases.