The Leviton R02‑DHS05‑0LW is a premium in‑wall humidity sensor and fan control designed to automatically manage ventilation based on real‑time moisture levels. Using advanced digital humidity‑sensing technology, this smart Decora‑style control activates a connected exhaust fan when humidity rises and turns it off when moisture returns to normal—helping prevent condensation, mildew, and air‑quality issues in bathrooms, basements, laundry rooms, and spas.

Engineered for convenience and flexibility, this control fits standard wallboxes, works with or without a neutral wire, and replaces any standard single‑pole switch. With user‑adjustable sensitivity levels, time‑delay settings, and an intuitive LED indicator system, it puts automated ventilation within easy reach for homeowners and contractors seeking energy‑efficient moisture management.

Key Features

• Automatic humidity detection activates a bath or ventilation fan when moisture rises and turns it off when levels normalize.
• Advanced digital sensing technology continuously monitors humidity for precise, reliable operation.
• Flexible wiring — can operate with or without a neutral wire, using ground when neutral is absent.
• Fits Decora wallplates and allows tool‑free adjustment of settings without removing the faceplate.
• User‑adjustable humidity threshold and timeout settings for customized operation.
• Interchangeable line/load wiring helps prevent wiring mistakes and speeds installation.
• Slim profile fits comfortably in most electrical wallboxes.
• Perfect for bathrooms, basements, laundry rooms, and spa areas.

Specifications

• Model: R02‑DHS05‑0LW (Equivalent to DHS05‑1LW in feature set)
• Color: White
• Switch Style: Decora in‑wall humidity sensor & fan control
• Electrical Ratings:
  • 600W incandescent
  • 300W LED/CFL
  • 400VA ELV & MLV
  • 1/4 HP motor load
• Voltage: 120 VAC
• Power Consumption: <0.5W
• Time Delay Options: 10, 20, 30, or 45 minutes
• Sensor Type: Humidity (microprocessor‑controlled)
• Neutral: Optional
• Certifications:
  • ASHRAE 62.2 compliant
  • CALGreen
  • California Title 24
  • CSA
• Dimensions: 1.73″ W × 0.95″ D × 4.13″ H
• Wallplate: Sold separately

Applications

The Leviton R02‑DHS05‑0LW is ideal for:

• Bathroom ventilation — reduces fogging, condensation, mold, and mildew.
• Basements & laundry rooms — maintains better air quality in moisture‑prone areas.
• Home spas & steam‑heavy areas — automatically clears moisture for comfort and safety.
• Energy‑efficient ventilation — runs only when needed, reducing unnecessary fan usage.
• Fan/light combination circuits — compatible with most ventilation fans up to ¼ HP.