LightLink(TM) Pro LED Module for Apeiron PROPress and hold momentary switch to initiate light color cycle. Dimming cycle continues to dim as long as switch is engaged. Briefly press and release momentary switch for on/off operation. For 2 and 3 Color enabled Fixtures, double-click momentary switch to enter color 2, triple-click for color 3. Add additional momentary switches in parallel with the shown switch for multi-location control. Upon loss of power, intensity and LED color of controlled Fixtures return to previous state, using LightLink&';s onboard non-volatile memory.Features:9-36V DC Input Low Level Dimming Using Momentary Switch Interface Enables Smart Tri-Color Operation Small Size, Fully PottedNon-Volatile Memory Recalls Last Intensity Specifications: Type: Parts Box Dimensions: 2"H x 2"W x 4"L WT: 0.1 lbs Quick Guide (pdf)