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Intermatic ET1705C electronic timer, rectangular grey enclosure with digital display and buttons

Intermatic

Intermatic ET1705C 7-Day Electronic Timer SPST

SKU CH-Q50Z-08E4R

A 7-day electronic timer with automatic daylight-saving adjustment, 120–277 VAC operation and up to 28 programmable events

  • 7-day scheduling with automatic daylight saving adjustment
  • Multi-volt operation from 120 to 277 VAC
  • Up to 28 set points for precise load control
  • 14 on/off events per channel across the week
  • Three-year program backup with two AAA alkaline batteries

Electronic timer for weekly scheduling

The Intermatic ET1705C is a 7-day electronic time switch designed for electricians and facility managers who need automated load control across a seven-day cycle. It replaces mechanical timers with precise to-the-minute programming and automatic daylight saving adjustment.

Fits standard wiring with multi-volt input

The unit operates on 120 to 277 VAC supply, allowing direct connection to common single-phase circuits without a separate transformer. Its SPST contact switches one load, and the programmer stores up to 28 set points (14 ON and 14 OFF) distributed across the week. Two AAA alkaline batteries maintain the schedule for at least three years during power loss.

Battery backup and override simplify commissioning

The included industrial-grade AAA cells protect timing and programs for years, removing the need to re-enter schedules after outages. A manual override lets technicians toggle the load instantly without altering the stored program, speeding up testing and temporary changes on site.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $231.99
Pricier than about 82% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameINTERMATIC INC

Questions about this item

How many ON/OFF events can the ET1705C store before the schedule repeats?

The timer holds up to 28 set points, divided into 14 ON and 14 OFF events per channel across the week.

What voltage range does the multi-volt input accept for continuous daily operation?

It operates from 120 to 277 VAC, covering standard residential and light-commercial supplies.

Which batteries must be installed to keep the program alive during a power cut?

Two industrial-grade AAA alkaline cells provide at least three years of backup for the schedule and clock.

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