Standard for USA/Canada: 120V/60Hz, 277V/60Hz
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A tubular low-pressure discharge lamp containing mercury vapour. The ultraviolet radiation produced by the mercury discharge is converted into visible light by fluorescent substances on the internal surface of the tube. Different colours of light and colour rendition qualities can be obtained by combining different fluorescent substances. The fluorescent lamp usually has heated electrodes enabling it to be started with relatively low voltages. Fluorescent lamps require conventional or electronic control gear.