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White in-wall mechanical countdown timer switch with rotary dial and metal wall plate

Electrical timer switch

SKU CH-8DYY-JHS1X

Spring-wound countdown timer switches lights, fans or heaters off after one to fifteen minutes with no neutral wire needed

  • Spring-wound countdown shuts off automatically after up to 15 minutes
  • No neutral wire required for simple single-pole installation in standard boxes
  • Handles 20 A resistive loads at 125 VAC for lights, fans and heaters
  • Compatible with LED, CFL and incandescent bulbs without flicker
  • Includes metal wall plate for a finished look right out of the box

15-Minute Spring-Wound Timer

This in-wall mechanical countdown switch replaces a standard light switch to run lights, exhaust fans, heaters or pumps for a set period. It suits homeowners and electricians who want automatic shut-off without programming or batteries. The spring-driven mechanism needs no neutral wire, so it fits into existing single-pole wiring with minimal effort.

Sustained Operation Behaviour

The timer counts down from the chosen setting and cuts power cleanly when the dial reaches zero. Because the mechanism is purely mechanical, its behaviour does not change over repeated daily cycles and it does not rely on standby electronics that could drift. It handles resistive loads up to 20 A at 125 VAC and motor loads up to 1 HP at the same voltage without contact degradation.

15303 Model with 20 A Resistive Rating

The single specification that decides fit is the 20 A resistive rating at 125 VAC combined with the 15-minute maximum countdown. Installations needing longer run times, higher voltage switching or a neutral-dependent smart timer cannot use this device.

Highlights

  • Spring-wound countdown shuts off automatically after up to 15 minutes
  • No neutral wire required for simple single-pole installation in standard boxes
  • Handles 20 A resistive loads at 125 VAC for lights, fans and heaters
  • Compatible with LED, CFL and incandescent bulbs without flicker
  • Includes metal wall plate for a finished look right out of the box

Specifications

BrandGE

Questions about this item

How much heat does the 15-minute mechanical timer generate when it runs all day?

The spring-wound mechanism produces no measurable heat during operation; only the connected load draws power.

What wiring must already exist in the wall box for the timer to work?

A standard single-pole switch loop with line and load conductors is sufficient; no neutral wire is required.

Will the 20 A resistive rating at 125 VAC handle the older incandescent bulbs I still use?

Yes, the 20 A resistive and 7 A tungsten ratings at 125 VAC cover typical incandescent loads.

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