TOPGREENER Dual Tech Humidity Sensor Switch - Motion + Humidity

Our review of the TOPGREENER Dual Tech Humidity Sensor Switch finds it best for homeowners and contractors who want a single in-wall device to automate both a bathroom light and exhaust fan. The unit combines a passive infrared motion sensor with a humidity sensor so the fan can come on automatically as moisture rises and lights can react to occupancy; this review highlights the practical control options, simple adjustments, and why it is useful where humidity and hands-free operation matter most.

Key Features

• Dual-tech control: Combines a PIR motion sensor for lights and a humidity sensor for the fan so both functions can be managed from one in-wall switch.
• Two operating modes: Occupancy Mode provides auto on/off for lights and fan, while Vacancy Mode allows manual light-on with auto-off and automatic fan control.
• Adjustable settings: Four time delay settings and three humidity thresholds let users tune how long the light or fan stays on and at what moisture level the fan engages.
• Compatibility and coverage: Works with LED bulbs and offers up to 600 sq ft coverage and a 180 degree field of view for motion sensing in typical bathroom layouts.
• Electrical ratings: Rated for 120VAC with 3A fan/motor load and up to 150W for CFL/LED or 500W for incandescent, making it suitable for most residential bathroom circuits.

Who It's For

The TOPGREENER switch is ideal for homeowners renovating bathrooms, landlords wanting to reduce humidity-related issues, and electricians installing a code-compliant in-wall control where a neutral wire is available. The combined motion and humidity functions are most useful in bathrooms used by multiple people or where exhaust fan use is inconsistent.

It is less appropriate for vintage wiring without a neutral, for systems where the fan requires higher motor current than the 3A rating, or for shoppers who need a full smart-home integration platform; this is a focused in-wall control rather than a networked device.

Pros & Cons

Pros

• Automates fan and light with one device, reducing manual steps for users and improving moisture control.
• Adjustable time delay and humidity levels provide flexibility to match usage patterns and reduce unnecessary run time.
• Energy savings from motion sensing and compatibility with LED lighting support lower operating costs.

Cons

• Some users report inconsistent auto-on behavior for the fan, so installation setup and placement matter for reliable performance.
• Requires a neutral wire and professional installation is recommended, which limits installation locations and may add cost.

Specifications

Brand	TOPGREENER
Model	TDHOS5
Voltage	120VAC
Fan/motor load	3A
Lighting load	500W incandescent/halogen, 150W CFL/LED
Coverage / FOV	Up to 600 sq ft, 180 degree field of view
Modes / Settings	Occupancy and Vacancy modes; 4 time delays; 3 humidity levels

Our Verdict

The TOPGREENER Dual Tech switch is a practical, value-oriented choice for controlling a bathroom light and fan together, especially where humidity control and hands-free operation matter. It is well suited to typical residential bathrooms and saves energy via motion sensing, though buyers should factor in the neutral wire requirement and follow recommended professional installation for reliable auto-on performance.

Frequently Asked Questions

Does this switch require a neutral wire?
Yes, a true neutral is required and the manufacturer recommends professional installation to verify wiring per code.

Can the fan and light be controlled separately?
Yes, the device contains two single-pole controls so the light and fan operate independently while remaining in the same wall unit.

What adjustments are available?
You can choose Occupancy or Vacancy mode, set four different time delays from 15 seconds to 30 minutes, and pick among three humidity trigger levels.