Smooth, precise airflow control Stepless speed control knob with five distinct speed settings gives you finetuned transitions between fan speeds. Ideal when you need gradual adjustments for comfort or noise reduction. Wide power compatibility Supports fan and blower wattages from 15W to 300W, making it suitable for both typical home fans and larger commercial blowers. Use a single control across a range of motor sizes without mismatch. Quick, lowimpact installation Designed to eliminate the need for junction boxes or cutting into walls. Simply connect the wires directly to reduce installation time, labor and disruption. Broad application range Compatible with ceiling fans and exhaust systems. Works well in schools, offices and garages, as well as other locations that require reliable fan speed control. Key benefits — why you need it Improves comfort and reduces noise by enabling smooth speed transitions instead of abrupt on/off changes. Covers a wide wattage range so you can standardize controls across multiple fans or blowers in a building. Saves installation time and avoids invasive wall work, lowering labor costs and minimizing downtime. Performance and compatibility highlights Function: manual stepless control knob that provides five selectable speed settings. Power range: 15W to 300W for compatibility with most household and light commercial fans and blowers. Installation: direct wire connection, no junction box or wall cutting required. Applications: ceiling fans, exhaust fans and blower systems used in schools, offices, garages and similar environments. Practical use scenarios Classroom ventilation: finetune ceiling fan speed to keep students comfortable and reduce distracting noise during lessons. Office cooling: adjust office exhaust or ceiling fans to balance air movement and sound levels through the workday. Garage or workshop ventilation: control blower speed for dust or fume extraction without needing different controllers for each motor size. What makes it stand out Combines a wide wattage range and easy installation with precise, userfriendly control. The unit is intended for straightforward replacement or retrofitting where minimal installation work is preferred. Compatibility note Designed specifically for use with ceiling fans and exhaust/blower systems within the specified 15W–300W range. Follow standard electrical safety practices when connecting wires directly.