Diameter: 100mm / 4" Bathroom Extractor Fan with Humidistat and Timer: Ideal for use as a bathroom fan extractor silent or kitchen fan. Durable plastic, reliable axial fan, slide bearing for long-lasting performance. The humidistat extractor fan is equipped with a humidity level regulator with which you can set the humidity level. Bathroom fan with humidity sensor is resistant to water splashes and suitable for humid environments. Extractor fan bathroom timer : After turning off the standard fan the timer ensures its operation for a certain period of time. Bathroom vent with superior ventilation while ensuring user safety. Versatile and Efficient Extraction: ideal for various applications, use as a silent extractor fan bathroom or kitchen wall extractor fan. Quiet operation and effective air extraction. Easy to install - Our small extractor fan bathroom humidity sensor includes all necessary components for easy installationThis extraction fan making it a hassle-free addition to your home. Made in Europe.