Pico C-4 Expansion ModulePico Expansion Modules extend the power and reach of the Poco Digital Lighting Control system making it possible to control other manufacturers’ luminaires, lighting accessories and devices that do not have the sophisticated PLI technology built-in. The Pico C-4 module provides Poco or TTP control of third party RGB or RGBW lighting accessories. The Pico P-1 module acts as an in-line solid-state relay, controlling any large load up to 20 Amps with on/off and PWM dimming control.