Take charge of your terrarium lighting with the Zoo Med ReptiCare Terrarium Timer. This 24-hour programmable lighting timer automatically controls a single lamp or other element by setting on and off times that you control. You can use it to regulate your terrarium's photoperiod with ease， providing a natural day/night cycle for your reptiles. It’s equipped with a grounded three-prong receptacle for safety and a large analog dial for simple programming.