Leviton Countdown Timer Switch for Bathroom Fans & Lights — White, 10/20/30/60 min, No Neutral

Leviton DT160-1LW is a Decora-style countdown timer switch with four preset run times (10, 20, 30, 60 minutes) that replaces a standard single-pole switch to automatically turn off fans, motors, and lights.

This slim, wall-box-friendly timer fits in place of an ordinary light switch and gives you manual on with automatic off using five buttons: four preset durations and a manual off. Designed for common residential loads—bathroom fans, heat lamps, towel warmers, attic fans and many light types—the DT160-1LW offers an easy DIY install without requiring a neutral wire in many situations thanks to its Green Flex Sleeve. It works with Decora wallplates and coordinates with other Decora devices.

How does the countdown timer simplify bathroom fan or light control?

The timer allows you to start a fan or light and have it automatically switch off after a preset interval, preventing wasted energy and annoying forgotten lights. Buttons are labeled for fast selection and a manual off button cancels timing at any point.

• Four preset durations: 10, 20, 30, 60 minutes for repeatable, predictable run times
• Manual off button for immediate shutdown
• Auto-off avoids prolonged fan or light operation
• Simple button layout for quick one-hand use

What wiring and installation considerations should I know?

The DT160-1LW is designed for a straightforward retrofit into an existing single-pole switch location and fits shallow wallboxes. It uses interchangeable black lead wires for line/load and a Green Flex Sleeve that can connect to ground when no neutral is present, or be removed to connect to a neutral if available.

• Requires a ground connection; Green Flex Sleeve adapts to neutral or ground situations
• Two black wires are interchangeable to reduce miswiring risk
• Compact depth helps fit tight or older wall boxes
• Compatible with Decora and Decora Plus wallplates (sold separately)

Which loads and bulb types does this timer support?

Leviton sized this timer for typical household loads so it can control LED/CFL and incandescent lighting as well as motors up to half horsepower. Check your fixture’s rating before installation and avoid using the timer as the only switch for required area lighting.

• 600W LED/CFL and 1800W incandescent/halogen capacity
• 1200VA magnetic/electronic low-voltage and fluorescent compatible
• Rated ½ HP / 9.8A for fan and motor loads, 15A resistive
• Not recommended where controlled lighting is the only light source in an area

How can I match the timer to my room’s decor?

The DT160-1LW has the classic Decora look and accepts Leviton DTKIT faceplates so you can change color to fit your trim or wall finish. Its minimalist profile blends with modern and traditional interiors.

• Available in white model; optional DTKIT faceplates sold separately
• Faceplate color options include white, ivory, light almond, gray, black and brown
• Sleek Decora styling coordinates with other Decora devices
• Shallow design reduces faceplate protrusion for a cleaner appearance

Who this is for: homeowners, renters (with landlord approval), electricians, and DIYers who want a simple, reliable way to limit run time for exhaust fans, bathroom heaters, towel warmers, attic fans and many lighting loads. If you want a no-frills, preset countdown solution that fits Decora openings, supports a wide range of bulb and motor types, and installs without a neutral in many boxes, the Leviton DT160-1LW is a practical choice. Always confirm load compatibility and required grounding before installing, and consult an electrician if you’re unsure about wiring or local code requirements.