The Intermatic ET90115C is a 1‑circuit, 365‑day astronomic electronic timer switch that automatically adjusts for sunrise and sunset, eliminating the need for external photocontrols. It accepts 120–277 VAC input and is rated for 30 A resistive/general-purpose loads, making it ideal for indoor lighting, pump controls, and timed machinery operation.

Featuring a robust metal (Type 1) enclosure and non-volatile memory, the timer retains programming indefinitely, backed up by a 100-hour supercapacitor (no batteries required). Programming is intuitive via on-screen menus, USB, or Ethernet, and firmware updates can be performed in the field for expanded functionality.

With over 2,000 event schedules, holiday programming, manual overrides, and automatic daylight saving time adjustment, the ET90115C offers flexible, energy-saving control customized to your schedule. It’s UL and CSA listed, suitable for commercial and industrial environments seeking reliable, programmable automation .