Product News

Getting the Most Out of the TDHOS5 Humidity & Motion Sensor Switch

As you’re deep into your shower, deep in thought as the water cleanses the day’s dirt (literally and figuratively) off you, you feel a jolt in your back and suddenly remember that you forgot to turn on the bathroom fan before you stepped in the shower. You contemplate either quickly stepping out of the shower to turn it on and risk slipping, or continue showering and further expose your bathroom with mold and bacteria growth threats. Both unfavorable outcomes. Fret not, the TOPGREENER TDHOS5 Humidity and PIR Motion Sensor Switch is here.

The TDHOS5 is the first switch of its kind, offering both humidity and motion sensors in one switch. The two technologies each control one load; for example, the motion sensor controls the light and the humidity sensor controls the bathroom fan. The TDHOS5 uses an intelligent humidity sensor to detect moisture in the air, and if too much moisture is detected, the sensor will automatically turn the fan on to eliminate moisture. When the sensor senses that the humidity level has fallen to a normal level, the sensor will automatically turn the fan off. The PIR motion sensor controls the lights to automatically turn them on when motion is detected. When motion is no longer detected, the PIR sensor will automatically turn the lights off. This means no more interrupted showers! No more moldy bathrooms!

Because it is such a customizable switch and there are so many different environments this switch could be installed in, here are some tips on how to get the best performance out of your TDHOS5 sensor switch.

Shower GIF

Optimal humidity sensor performance:

Make sure the sensor is no more than 8’ away from the main humidity source, such as the shower if the switch is installed in a bathroom. If the humidity sensor switch is too far, the humidity sensor will have a hard time sensing moisture in the air.


Optimal ceiling height: 7’-8’

Because steam and hot air rises, a high ceiling will cause difficulty for the sensor to engage.


Install the sensor switch at least 4’ away from vents and obstructions

Keep at least a 4’ distance from A/C and heater vents or any other direct airflow source, which will falsely trigger the sensor. Obstructions may block the sensor from accurately detecting motion and humidity.


LED lights require a minimum 10W

When using the TDHOS5 with LED bulbs, there is a minimum wattage requirement of 10W, either for a single LED bulb or combined wattage of multiple bulbs.


Humidity Sensor Settings

The humidity sensor has three levels to choose from; below is a breakdown of each setting to help you understand exactly how each level works:

Setting 1: Low Humidity

  • Doesn’t need a lot of moisture level in the air to activate fan. Sensor activates fan when humidity level is low. Sensor has high sensitivity.

Setting 2: Medium Humidity

  • Medium moisture level will activate fan. This is the default setting. Sensor activates fan when humidity level is normal. Sensor has medium sensitivity.

Setting 3: High Humidity

  • Needs higher than normal moisture level to activate fan. Sensor activates fan when humidity level is high. Sensor has low sensitivity.


What environments use what settings

Though it’s hard to give exact configurations due to the extremely variable nature of each person’s bathroom or space, we can offer some guidelines so you know where to start.

The larger the bathroom, the lower the humidity level

Use a lower humidity setting to increase the sensitivity.

Naturally high humidity areas, use a higher humidity level

This prevents the sensor from turning the fan on constantly, even when the bathroom is not in use.

For basements, use a low humidity level

Due to the larger space of basements, use a lower humidity setting to increase the sensitivity.

Sun rooms in the summer should use medium or high humidity levels

If the fan never turns off, try using a higher setting (ex, setting 1 -> setting 3)

This means the sensor is too sensitive in the current environment, and a higher setting, such as setting 3, will lower the sensitivity.


Do you use a humidity sensor switch in your home? Has it improved bathroom cleaning or upkeep or humidity control? Let us know in the comments!