Intermatic EI600C Time Switch, Ivory Available in Ivory Easy-to-program timer provides up to 40 ON/OFF operations per week No Neutral Wire required CFL compatible to all EI200 series timers (EI210W, EI220W, etc.), EI500C, EI500WC, EI500LAC, EI600C and EI600LAC Factory-supplied CR2 lithium battery provides up to three years of time keeping without AC power