General Dimensions : 77 x 87 x 40mm Weight : 90g USB connection ESA software : PC ESA2 software : PC / Mac ESA Pro 2 software : PC / Mac DMX channels : 512   Standalone Mode Number of scenes : 255 Number of zones : 1 Standalone memory : 128k Memory capacity (20 ch.) : 5600 steps Memory capacity (60 ch.) : 2100 steps Memory capacity (512 ch.) : 240 steps Power voltage : 5-5.5V DC Power connector : mini USB   Triggering Mechanical buttons : 3 Internal connector : HE10 Port triggers : 8 Clock/calendar triggers : 100