AC Infinity Multifan S3, Quiet USB Cooling Fan, 120MM

AC Infinity MULTIFAN S3 Quiet USB Cooling Fan – 120mm Keep electronics, controllers and other heat-producing equipment cool with the AC Infinity MULTIFAN S3 Quiet USB Cooling Fan. This compact 120mm fan delivers up to 52 CFM of airflow while producing just 18 dBA of noise, making it an excellent choice for applications where effective cooling and quiet operation are equally important. The MULTIFAN S3 features an in-line multi-speed controller, allowing you to adjust the fan speed to achieve the ideal balance between airflow and noise. Premium dual-ball bearings provide a rated lifespan of up to 67,000 hours and allow the fan to operate either horizontally or vertically. USB-powered operation, a generous 6ft cable and anti-vibration rubber feet make the MULTIFAN S3 a simple and versatile cooling solution for grow room equipment, controllers, computers, AV equipment, games consoles, amplifiers, routers and other electronics. Key Features 120mm ultra-quiet USB cooling fan Delivers up to 52 CFM airflow Quiet operation at just 18 dBA In-line multi-speed controller with power switch Adjust airflow and noise levels to suit your application Premium dual-ball bearing system Rated lifespan of up to 67,000 hours Can operate horizontally or vertically USB powered for simple installation 6ft / 1.8m power cable Eight anti-vibration rubber feet Additional USB port for connecting compatible MULTIFAN units Up to four compatible fans can share a suitable USB power source Low 1.6W power consumption CE and RoHS certified Powerful 52 CFM Airflow The larger 120mm fan delivers up to 52 CFM of airflow, providing significantly more air movement than smaller compact USB fans while maintaining exceptionally quiet operation. This makes the MULTIFAN S3 particularly useful for cooling larger pieces of electronic equipment or installations where additional airflow is required to prevent heat build-up. Ultra-Quiet 18 dBA Operation Designed with noise-sensitive environments in mind, the MULTIFAN S3 operates at just 18 dBA. This provides effective continuous cooling without introducing excessive background noise, making it ideal for grow rooms, home entertainment systems, offices, bedrooms and other areas where quiet operation is important. Adjustable Multi-Speed Controller The included in-line multi-speed controller allows you to adjust the fan's performance depending on the amount of cooling required. Increase the fan speed when equipment temperatures rise or reduce the speed when only gentle airflow is needed. This allows you to achieve the ideal balance between cooling performance and operating noise. An integrated power switch also allows the fan to be switched off without disconnecting the USB cable. Premium Dual-Ball Bearings The MULTIFAN S3 features premium dual-ball bearings designed for reliable long-term operation. With a rated lifespan of up to 67,000 hours, the fan is well suited to applications where regular or continuous cooling is required. The dual-ball bearing design also allows the fan to operate in either a horizontal or vertical position, giving you much greater flexibility when positioning it around your equipment. USB Powered for Easy Installation The MULTIFAN S3 uses a USB power connection, allowing it to be powered from compatible USB ports commonly found on computers, games consoles, AV equipment and other electronic devices. The generous 6ft / 1.8m power cable provides plenty of flexibility when positioning the fan around cabinets, equipment racks and grow room electronics. Daisy Chain Multiple MULTIFAN Units If additional airflow is required, compatible MULTIFAN S Series fans can be connected together. Each fan features an additional USB connection, allowing up to four compatible MULTIFAN units to share a suitable USB power source. This makes it easy to expand your cooling setup without requiring individual power connections for every fan. Anti-Vibration Rubber Feet Eight large anti-vibration rubber feet help minimise movement and reduce vibration transferred between the fan and surrounding surfaces. This further reduces operating noise and allows the MULTIFAN S3 to be positioned directly on top of or beside compatible equipment without unnecessary rattling or vibration. Compact & Versatile Design Measuring approximately 120 × 120 × 25mm, the MULTIFAN S3 provides impressive airflow from a relatively compact footprint. The ability to position the fan either flat or upright makes it suitable for a wide variety of cooling applications, including areas where conventional equipment fans may be difficult to install. Ideal for Grow Room Equipment Electronic equipment inside grow rooms can generate considerable heat, particularly when multiple controllers, power supplies and other devices are positioned close together. The MULTIFAN S3 provides targeted airflow that can help move warm air away from sensitive electronics without requiring a larger circulation fan. Its compact dimensions, USB power and quiet operation make it particularly useful for adding extra airflow around grow room controllers and other electronic equipment. Popular Applications Grow room controllers and electronic equipment Computers and computer components AV receivers Amplifiers Games consoles DVRs and media equipment Routers and modems Electronic cabinets Equipment racks Home entertainment systems Other heat-producing electronics Technical Specifications Product AC Infinity MULTIFAN S3 Quiet USB Cooling Fan Model AI-MPF120A Fan Size 120mm Dimensions 120 × 120 × 25mm Maximum Airflow 52 CFM Noise Level 18 dBA Maximum Speed 1,300 RPM Static Pressure 1 mm-H2O Operating Voltage 3–7V DC Power Consumption 1.6W Current 0.32A Power Connection USB Cable Length 6ft / 1.8m Bearings Dual Ball Rated Lifespan 67,000 Hours Mounting Position Horizontal or Vertical Certifications CE & RoHS MULTIFAN S1 or MULTIFAN S3? Both models provide quiet USB-powered equipment cooling, but the main difference is their size and airflow capacity. MULTIFAN S1 – Compact 80mm fan delivering up to 26 CFM, ideal for smaller electronics and restricted spaces. MULTIFAN S3 – Larger 120mm fan delivering up to 52 CFM, ideal when more powerful equipment cooling is required. For larger electronics or applications where greater airflow is required, the MULTIFAN S3 provides the additional cooling capacity while remaining exceptionally quiet. Frequently Asked Questions How much airflow does the MULTIFAN S3 produce? The MULTIFAN S3 delivers up to 52 CFM of airflow from its 120mm fan. How quiet is the MULTIFAN S3? The fan has a rated noise level of just 18 dBA, making it suitable for applications where continuous quiet operation is important. Can I adjust the fan speed? Yes. The included in-line multi-speed controller allows you to adjust the fan speed to achieve the preferred balance between airflow and noise. Can the fan be positioned flat? Yes. Premium dual-ball bearings allow the MULTIFAN S3 to operate either horizontally or vertically, so it can be laid flat or positioned upright depending on the application. Can multiple MULTIFAN units be connected together? Yes. Compatible MULTIFAN S Series fans can be daisy chained together, with up to four compatible units sharing a suitable USB power source. Is it suitable for continuous use? Yes. The premium dual-ball bearing system has a rated lifespan of up to 67,000 hours, making the MULTIFAN S3 suitable for applications requiring extended or regular operation. Powerful, Quiet & Compact Equipment Cooling The AC Infinity MULTIFAN S3 Quiet USB Cooling Fan provides an excellent balance of powerful airflow, low noise and compact design. With up to 52 CFM airflow, 18 dBA operation, adjustable speed control and long-life dual-ball bearings, it provides reliable targeted cooling for grow room equipment, computers, AV systems and other heat-producing electronics. USB-powered operation, flexible horizontal or vertical positioning and the ability to connect multiple MULTIFAN units make the S3 an easy and effective way to improve airflow and help protect valuable equipment from excessive heat.