---
product_id: 469054235
title: "TOPGREENER Humidity Sensor Fan Switch for Ventilation with Wall Plate | Automatically turns fan on/off based on humidity levels. Neutral wire required. UL listed. White, 2 Pack"
brand: "topgreener"
price: "$99.51"
currency: USD
in_stock: true
reviews_count: 13
category: "Topgreener"
url: https://www.desertcart.us/products/469054235-topgreener-humidity-sensor-fan-switch-for-ventilation-with-wall-plate
store_origin: US
region: United States of America
---

# Supports 120VAC, max 3A fan load 3 adjustable humidity levels (45%-80% RH) Fixed 20-minute fan run cycle TOPGREENER Humidity Sensor Fan Switch for Ventilation with Wall Plate | Automatically turns fan on/off based on humidity levels. Neutral wire required. UL listed. White, 2 Pack

**Brand:** topgreener
**Price:** $99.51
**Availability:** ✅ In Stock

## Summary

> 💨 Breathe smarter, live fresher — humidity control that works while you don’t.

## Quick Answers

- **What is this?** TOPGREENER Humidity Sensor Fan Switch for Ventilation with Wall Plate | Automatically turns fan on/off based on humidity levels. Neutral wire required. UL listed. White, 2 Pack by topgreener
- **How much does it cost?** $99.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/469054235-topgreener-humidity-sensor-fan-switch-for-ventilation-with-wall-plate)

## Best For

- topgreener enthusiasts

## Why This Product

- Trusted topgreener brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Energy-Saving Timer:** Fixed 20-minute run cycle prevents overuse, saving energy while ensuring optimal air quality.
- • **Manual Override Control:** Take charge anytime with a manual ON/OFF switch that pauses sensor detection for ultimate flexibility.
- • **Customizable Sensitivity:** Choose from 3 precise humidity thresholds to tailor ventilation for bathrooms, basements, or laundry rooms.
- • **Code-Compliant & Reliable:** Meets California Title 24 & IECC 2021 standards with UL listing and a 3-year warranty for peace of mind.
- • **Smart Humidity Activation:** Automatically triggers your fan at the perfect moisture level to keep your space fresh and mold-free.

## Overview

The TOPGREENER Humidity Sensor and Fan Control Switch is a UL-listed, code-compliant ventilation solution designed for high-humidity areas. Featuring 3 adjustable humidity sensitivity settings (45%-80% RH), a fixed 20-minute fan run timer, and manual override, it supports 120VAC power with a 3A max load. Ideal for bathrooms, basements, and laundry rooms, this 2-pack includes wall plates and requires a neutral wire for installation, ensuring efficient, automatic moisture control and energy savings.

## Description

Buy TOPGREENER Humidity Sensor and Fan Control Switch, Ventilation Fan Humidity Sensor Switch, Neutral Wire Required, TDHS5, 2-Pack (Wall Plate Included): Accessories - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Incorrect programing instructions - Installed this humidity sensing switch replacing a really old school fan timer in our laundry room that had an analog clock in it with metal tabs to set time intervals. Installation was simple and wired up exactly as the old timer. Tested it by blowing on it and it immediately turned the fan on when sensing humidity from my breath. The instructions that came with it for programming are totally incorrect and mention being able to set the time for how long it runs, which is not possible. After researching this I actually found the correct installation guide online which states the time is runs is always 20 minutes and is not adjustable. You can only adjust the humidity sensitivity to three preset settings and that's it. Programming: - The fan button will be used for programming - Pay close attention to the LED lights as it will flash to indicate successful programming steps and each time the button is pressed while making selections. - After each step, there are only 20 seconds to make the next programming selection. If a selection has not been made, time will expire and the LED light will flash 3 times and exit programming mode. There’s only one Programmable Function Function 1: Humidity level (Humidity Range 45% 65% 80%) - Setting 1: Low humidity sensitivity 45% (requires little humidity to trigger) - Setting 2 (Default): Medium humidity sensitivity 65% - Setting 3: High humidity sensitivity 80% (requires high humidity to trigger) To program the humidity sensor, you must first enter programming mode: STEP 1: Enter Programming Mode Press and hold the fan button for eight seconds until the LED indicator comes on. STEP 2: Choose the Setting Press the fan button the same number of times as the Setting Number (For example: Press the button 2 times to select Medium detection 65%). After the last button is pressed the sensor will flash back the current setting for that function 10 times at two-second intervals. If no selection has been made, the device will exit programming mode. STEP 3: Save the Settings Press and Hold the fan button for eight seconds. The LED light will flash 3 times. indicating that the settings are saved then the load will turn OFF. Example: Change to Setting 3 (High humidity) 1. Press and hold the fan button for eight seconds until the LED indicator comes on 2. Press the fan button three times. The LED indicator should now blink three times every two seconds 3. Press and Hold the fan button for eight seconds. The LED light will flash 3 times indicating that the settings are saved then the load will turn OFF
Review: Worked for my project - The house I bought has a skylight shaft in the bathroom. The bathroom fan didn’t keep up so in the winter it would start “raining” from the skylight shaft when the steam hit the cold walls of the shaft when anyone took a long shower. I had two Panasonic whisper fans installed: One that replaced the original fan/light by the shower, and one in the shaft. We had a sensor switch installed too that would control both fans. The problem was that the sensor was located at the bathroom entrance with the light switch, so it never really worked correctly. I replaced the whisper fan in the shaft with a vent connected to a 4” inline exhaust fan located as high up the shaft as I could get it and purchased this switch to mount in the shaft to control it. The switch is doing what I expected which is a good thing, because accessing it isn’t easy. Install was easy. Instructions were clear. You do need a neutral wire for any humidity sensor, so make sure you pull one and hook it up.

## Features

- Auto Humidity Activated Operation - Sensor switch detects excess humidity and automatically turns the ventilation fan on. Once activated, the fan runs for a fixed 20-minute cycle, helping to avoid unnecessary operation and save energy. Perfect for high humidity locations such as the bathroom, laundry room, basement, etc.
- 3 Adjustable Humidity Levels - Equipped with three adiustable gears, covering a full humidity adiustment range from 45% to 80% RH, vou can select the proper setting to match different indoor spaces and daily use scenarios.
- 20-Minute Time Delay Operation - This controller adopts fixed 20-minute running interval design. No matter manually or automatically turned on, the fan will run for 20 minutes steadily. If the humidity is still high after timing ends, it will pause for 5 minutes and restart another 20-minute working cycle to avoid motor overheating.
- Manual Control - Features a manual ON/OFF switch to bypass the humidity sensor. Manual ON runs the fan for 20 minutes then auto shuts off. When the manual button is used to turn OFF the fan, the fan will turn OFF immediately, and the humidity sensor will stop detecting humidity until it is reset by the user. This is a great feature if you live in areas with very high humidity and you don’t want the fan to come on throughout the night.
- Reliable, Code-Compliant Operation - Neutral wire required. One decorator wall plate included. Single-pole use only. It supports 120VAC power and a maximum 3A fan load, making it compatible with most standard bathroom exhaust fans. Meets California Title 24 and IECC 2021 requirements for bathroom ventilation controls. Comes with 3-year warranty and is UL-Listed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QPQHVXC |
| Actuator Type | Push Button" or "Rotary |
| Best Sellers Rank | #29,841 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #22 in Humidifier Accessories |
| Brand | TOPGREENER |
| Brand Name | TOPGREENER |
| Circuit Type | 1-way |
| Color | White |
| Compatible Devices | Ventilation Fans |
| Connectivity Protocol | X-10 |
| Connector Type | Screw Terminals |
| Contact Material | Metal |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | Humidity-based automatic control with manual override |
| Current Rating | 3 Amps |
| Customer Reviews | 4.2 out of 5 stars 496 Reviews |
| International Protection Rating | 120 |
| Manufacturer | Top Greener Inc |
| Material Type | Plastic |
| Mounting Type | Wall Mount |
| Number of Items | 2 |
| Number of Positions | 3 |
| Operating Voltage | 120 Volts |
| Operation Mode | ON-NONE-ON |
| Smart Home Compatibility | Smart Home Compatible |
| Specification Met | UL |
| Switch Type | Toggle |
| Terminal | Screw |
| UPC | 883951468675 |
| Unit Count | 2.0 Count |
| Wattage | 4320 watts |

## Product Details

- **Operation Mode:** ON-NONE-ON
- **Current Rating:** 3 Amps
- **Operating Voltage:** 120 Volts
- **Contact Type:** Normally Open
- **Connector Type:** Screw Terminals
- **Brand:** TOPGREENER
- **Terminal:** Screw
- **Circuit Type:** 1-way
- **Actuator Type:** Push Button" or "Rotary
- **Contact Material:** Metal

## Images

![TOPGREENER Humidity Sensor Fan Switch for Ventilation with Wall Plate | Automatically turns fan on/off based on humidity levels. Neutral wire required. UL listed. White, 2 Pack - Image 1](https://m.media-amazon.com/images/I/71G49fBhvqL.jpg)

## Available Options

This product comes in different **Color, Number Of Items** options.

## Questions & Answers

**Q: If I turn it on manually will it turns off in 30 minutes? I wasn’t sure if that’s what it means in the description?**
A: Yes, If you turn on the device manually, it will automatically turn off after 20 minutes. If you manually turn off then the humidity sensor is deactivated and you will have to turn on manually and let it cycle in order to turn the sensor back on.
Best Regards,
TopGreener Inc.

**Q: How do I program this? And does it flash or change a color when I change the levels?**
A: In order to program, hold down the button for 8 seconds until the indicator light blinks. Once it is blinking, change modes by hitting the button 1,2 or 3 times. The mode is indicated by the number of times the LED blinks/flashes. The LED will only flash not change color.
Best Regards,
TopGreener Inc.

**Q: Where is this made? Is this true white or off white.**
A: China....True White

**Q: What are the humidity percentages for the low, medium and high settings?**
A: The setting are as follows: 45%-low,, 65%-medium(Default), 80%-high. If you have further questions please let us know at support@topgreener.com
Best Regards,
TopGreener Inc.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Incorrect programing instructions
*by N***Y on March 10, 2024*

Installed this humidity sensing switch replacing a really old school fan timer in our laundry room that had an analog clock in it with metal tabs to set time intervals. Installation was simple and wired up exactly as the old timer. Tested it by blowing on it and it immediately turned the fan on when sensing humidity from my breath. The instructions that came with it for programming are totally incorrect and mention being able to set the time for how long it runs, which is not possible. After researching this I actually found the correct installation guide online which states the time is runs is always 20 minutes and is not adjustable. You can only adjust the humidity sensitivity to three preset settings and that's it. Programming: - The fan button will be used for programming - Pay close attention to the LED lights as it will flash to indicate successful programming steps and each time the button is pressed while making selections. - After each step, there are only 20 seconds to make the next programming selection. If a selection has not been made, time will expire and the LED light will flash 3 times and exit programming mode. There’s only one Programmable Function Function 1: Humidity level (Humidity Range 45% 65% 80%) - Setting 1: Low humidity sensitivity 45% (requires little humidity to trigger) - Setting 2 (Default): Medium humidity sensitivity 65% - Setting 3: High humidity sensitivity 80% (requires high humidity to trigger) To program the humidity sensor, you must first enter programming mode: STEP 1: Enter Programming Mode Press and hold the fan button for eight seconds until the LED indicator comes on. STEP 2: Choose the Setting Press the fan button the same number of times as the Setting Number (For example: Press the button 2 times to select Medium detection 65%). After the last button is pressed the sensor will flash back the current setting for that function 10 times at two-second intervals. If no selection has been made, the device will exit programming mode. STEP 3: Save the Settings Press and Hold the fan button for eight seconds. The LED light will flash 3 times. indicating that the settings are saved then the load will turn OFF. Example: Change to Setting 3 (High humidity) 1. Press and hold the fan button for eight seconds until the LED indicator comes on 2. Press the fan button three times. The LED indicator should now blink three times every two seconds 3. Press and Hold the fan button for eight seconds. The LED light will flash 3 times indicating that the settings are saved then the load will turn OFF

### ⭐⭐⭐⭐⭐ Worked for my project
*by S***L on December 9, 2023*

The house I bought has a skylight shaft in the bathroom. The bathroom fan didn’t keep up so in the winter it would start “raining” from the skylight shaft when the steam hit the cold walls of the shaft when anyone took a long shower. I had two Panasonic whisper fans installed: One that replaced the original fan/light by the shower, and one in the shaft. We had a sensor switch installed too that would control both fans. The problem was that the sensor was located at the bathroom entrance with the light switch, so it never really worked correctly. I replaced the whisper fan in the shaft with a vent connected to a 4” inline exhaust fan located as high up the shaft as I could get it and purchased this switch to mount in the shaft to control it. The switch is doing what I expected which is a good thing, because accessing it isn’t easy. Install was easy. Instructions were clear. You do need a neutral wire for any humidity sensor, so make sure you pull one and hook it up.

### ⭐⭐⭐⭐ Works well as advertised
*by S***Z on July 28, 2025*

This is a good little device to help manage moisture in the shower, eliminating the need to replace the fan itself with a moisture sensing one, which are quite expensive and harder ti install. This device is easy to install by replacing the toggle switch on the wall (perfect fit) and, for me, the setting was appropriate right out of the box, turning on the fan when moisture is detected and going off automatically. Happy with the purchase.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-26*