WHT DECORA WALL SW/HUMIDITY SE

WHT DECORA WALL SW/HUMIDITY SENSOR – Product Description

🔌 What it is

A white Decora-style wall switch with built-in humidity sensing, typically used to automatically control a bathroom exhaust fan or ventilation system based on moisture levels in the air.

This device is commonly called a humidity sensor switch (humidistat wall control).

🧾 What the name means

• WHT → White color finish
• DECORA → Standard rectangular Decora-style wall device format
• WALL SW → Wall switch form factor
• HUMIDITY SENSOR → Built-in sensor that detects moisture level in the room

⚡ What it does

This device:

• Monitors relative humidity in the room (usually bathrooms or laundry areas)
• Automatically turns the exhaust fan ON when humidity rises (like during showers)
• Keeps the fan running until humidity drops below a set threshold or delay timer expires
• Helps prevent mold, mildew, and moisture damage

Some versions also include:

• Adjustable humidity sensitivity
• Time delay shutoff
• Manual override switch function

🏠 Typical uses

• Bathrooms (most common)
• Showers and spa areas
• Laundry rooms
• Basements or damp spaces
• Code-compliant ventilation control in new construction

🧠 Simple explanation

This is a wall switch that automatically turns on a bathroom fan when it gets too humid and turns it off when the moisture level drops.