... ) With intelligent warm start, which gives 2 times longer lifetime for adaptor7) Voltage optional: 110v ,120v, 220v ,230v , 240v , ... 277v, and 347v 8) Electronic ballast provide constant light output for mains voltage of 156-256VAC9) EOL ( end of life ... irritated eyes. Chart 1 T5 adapter VS T8 lamp electricity saving Comparison chartLamp typepower(W)power comsumption(KW/h)NotelampballasttotalT8359440. ...