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Small black plastic 40 mm cooling fan with four wires and a 4-pin connector

Haywards

Haywards 40mm 12V DC 1.1W 3 wire fan switch video accessory

SKU CH-VV8Z-5VSMP

A 40 mm 12 V DC fan with 1.1 W draw, 18000 RPM speed, 54 dB noise and 70000-hour life

  • TypeOther
  • Designed for Sunon maglev KDE1204PFV1 4010 fans
  • 40 mm frame fits tight computer-case spaces
  • 12 V DC input with 7.0–13.4 V operating range
  • PWM intelligent temperature control adjusts speed automatically
  • Double ball bearing rated for 70000 hours life

Compatible 40 mm 12 V accessory for Sunon maglev

This accessory is designed for Sunon maglev cooling fans KDE1204PFV1 4010 that run at 12 V and draw 1.1 W. It suits builders who need a direct replacement switch for that specific 40 mm three-wire model. Buyers who want a different voltage, pin count or fan diameter cannot use this part.

Included switch and wiring change the control method

The bundled switch converts the fan’s standard three-wire connection into a four-wire PWM interface with intelligent temperature control and speed measurement. That change adds automatic speed regulation based on thermal load and lets the system monitor actual RPM. Without the switch the fan runs at fixed speed and offers no feedback signal.

Plastic frame with double ball bearing

The housing uses a plastic heatsink material and a double ball bearing rated for 70000 hours at up to 18000 RPM±10 %. The 40×40×28 mm frame fits standard 40 mm mounting holes and the 4-pin power interface plugs straight into compatible headers. Operating voltage spans 7.0-13.4 V and the unit produces 54 dB at full speed with 19.4 CFM airflow.

Highlights

  • Designed for Sunon maglev KDE1204PFV1 4010 fans
  • 40 mm frame fits tight computer-case spaces
  • 12 V DC input with 7.0–13.4 V operating range
  • PWM intelligent temperature control adjusts speed automatically
  • Double ball bearing rated for 70000 hours life

Specifications

TypeOther

Questions about this item

How long is the 40 mm fan rated to run before the double ball bearing needs replacement?

The manufacturer rates the bearing life at 70000 hours of continuous operation.

Which limit appears first when the fan runs continuously at 18000 RPM?

Acoustic output reaches 54 dB, making noise the primary constraint during sustained high-speed use.

What noise and heat levels should I expect if the fan runs all day at 12 V?

Expect up to 54 dB of radiator noise; the 12 W motor will add measurable heat inside the case.

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