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Wheelock's Exceder LED Series uses LEDs as the light source, which requires the lowest draw in the industry, according to the company. Produces high-fidelity sound output in a low-profile design for indoor wall mounts. Speakers use frequencies of 300 to 8,000 Hz. Models offer dual voltage (25/70 VRMS), five field-selectable tap settings, and four field-selectable candela settings.