LD: DIMMING (compatible with three-wire fluorescent dimming control)

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CL : CHANNEL LETTERS

Exclusive design for channel letter applications. Variable frequency technology maintains a virtuallyconstant current load independent of varying diameters and tube lengths. Thermal protection withautomatic reset disconnects supply voltage if the internal temperature of the power supply exceeds220º F. 1/2" female conduit nipple for primary connection and integral sleeve GTO for secondaryconnection .