The H3Y201SAC120 is a time-delay relay from Omron. This type of relay features a single pole, double throw (SPDT) contact arrangement and has a time-delay function that delays the change of its output after its input has changed. The H3Y201SAC120 has an electrical rating of 8A resistive at 250VAC and a timing range of 0.05-60 seconds. This relay can be used for various timing needs, including ON-delay, timed-ON, timed-OFF, and OFF-delay operations.