First, the Lumirail is an aluminum extrusion with specific design properties that will dissipate the heat away from the LED’s and the pcb. Each Lumirail has a maximum wattage capacity rating label. This is the total wattage of modules combined that can be used on the Lumirail. For example, the 24” Lumirail can accept up to a maximum of 36 Watts. In order to protect the LED’s from potential overheating, there is an integral thermal protector that will cause the modules to automatically dim until the the Lumirail cools down enough.
Second, the total output wattage (24 volts x X amps) of the power supply determines the total combined wattage of the modules that can used. If the modules sense an undersupply of power (too small of a power supply), they will blink. For example, if a 48” Lumirail (max capacity 72 watts) is used with 70 x 10 Watt modules, but only a 45 Watt power supply, the modules will blink indicating not enough power available to light them all.