The H3Y-2-30S-AC120 is a type of Omron timer. It is a compact, high-precision, multi-range timer with a wide voltage range and a wide range of time ranges. It has a compact plastic case and three small time ranges. It is designed to provide shorter time-off delays from 0.1 second to 10 hours. The timer is well-suited for applications such as light control systems, temperature controllers, and ventilation fans. The maximum load capacity is 10 A when used with a rated voltage of 120VAC.