AWENTA inline fan housing KWS100M 100 mm, 75 m³/h, 4.4 W, 230 V with microwave motion sensor and timer, white

AWENTA inline fan housing KWS100M is a compact ventilation unit designed for duct systems with a 100 mm connection. It delivers up to 75 m³/h of airflow while consuming 4.4 W at 230 V and integrates a microwave motion sensor together with an adjustable timer to enable presence-triggered extraction and automatic run-on. The white finish and small footprint make the unit suitable for discreet installation in bathrooms, toilets and other small rooms requiring controlled air exchange.

Advantages

The integrated microwave motion sensor provides reliable presence detection through non-contact sensing, allowing the fan to start automatically when movement is detected. The adjustable timer permits setting a delayed switch-off to maintain ventilation after occupancy ends. Low power consumption (4.4 W) and a rated airflow of 75 m³/h provide efficient extraction for small spaces without excessive energy use. The 100 mm duct connection and compact housing simplify retrofits and installations in limited spaces.

Suitable for

• Bathrooms and shower rooms requiring automatic extraction
• Toilets and small WC spaces with presence-triggered ventilation
• Small utility rooms or storage areas where motion-activated airflow is needed
• Retrofit projects with existing 100 mm ducting

Key specifications

• Duct connection: 100 mm
• Rated airflow: 75 m³/h
• Power consumption: 4.4 W
• Supply voltage: 230 V
• Sensor type: integrated microwave motion sensor
• Timer: adjustable run-on timer
• Colour: white

How to use

Install the fan housing into the duct line with the 100 mm connection according to local electrical and ventilation codes. Connect the unit to a 230 V supply and configure the integrated microwave sensor and timer following the manufacturer’s wiring and adjustment instructions. Once powered, the microwave sensor detects presence and starts the fan; the timer keeps the fan running for the selected period after motion stops. Ensure ducting and backdraught protection are fitted as required for effective operation.

Usage recommendations

Position the unit so the microwave sensor has a clear detection area and avoid mounting behind large metal objects that can block sensing. For bathrooms and toilets, set a moderate timer delay to remove moisture effectively while minimizing energy use. Regularly check duct connections and clean accessible parts as part of routine maintenance to preserve airflow and sensor performance.