A standard Plug in timer cannot cope with the inrush/surge from Led lighting .You will see on the rating plates of standard timers something like this on the rating plate -13 (2)A The example above showing the inductive load of 2A Only .The Plug and Grow Apex timer Will run 13A of all LED lighting on the market -LED is not strictly an Inductive load ,but there is a surge on Power Up and finding a suitable timer was problematic Not anymore ! -The Plug and Grow Apex timer is your answer For the first time -you can now ,with confidence , and without a contactor , time your LED lights