The TORK EJWT 24-Hour Percentage Timer Switch is designed for a wide range of applications in the agriculture, industrial, pumping or livestock industries. Automate your home or facility to save energy and money using the two control dials, one of which sets the cycle time and the second of which sets the percentage of time that the timer will be on. Featuring a total of 960 different time combinations, this timer matches the needs of most industrial applications and meets NEMA-4X standards for water resistance. Designed for any application that requires a daily repeating cycle, such as poultry, livestock, agriculture, greenhouses, oil well pumping or ventilation.