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

Haywards

Haywards 40 mm 12 V 18000 RPM 4-pin fan video accessory

SKU CH-PE88-H2RQQ

40 mm 12 V fan reaches 18000 RPM with 19.4 CFM airflow and 54 dB noise

  • TypeOther
  • 40 mm footprint fits tight spaces
  • 12 V PWM control adjusts speed automatically
  • 18000 RPM peak airflow for demanding cooling
  • Double ball bearing rated 70000 hours
  • 54 dB noise level at full speed

Product identity

The Haywards DBTB0428B2G is a 40 mm axial cooling fan built for computer cases and similar electronic enclosures. It runs on 12 V DC and uses a four-wire PWM interface for intelligent speed control.

Build and connections

A double ball bearing supports the rotor, rated for 70000 hours of operation. The four-pin connector supplies power, ground, PWM control and a tachometer signal, allowing the host system to regulate speed and monitor rotation in real time.

Deciding specification

Maximum speed reaches 18000 RPM with an airflow of 19.4 CFM and a noise level of 54 dB, making it suitable only for builds that prioritise raw cooling performance over acoustic comfort.

Highlights

  • 40 mm footprint fits tight spaces
  • 12 V PWM control adjusts speed automatically
  • 18000 RPM peak airflow for demanding cooling
  • Double ball bearing rated 70000 hours
  • 54 dB noise level at full speed

Specifications

TypeOther

Questions about this item

What does the 4-pin interface enable on this 40 mm fan?

The 4-pin interface provides PWM intelligent temperature control and speed measurement for the 12 V 18000 RPM fan.

What are the exact mounting dimensions for the DBTB0428B2G fan?

The fan measures 40×40×28 mm and is designed for computer case mounting.

How do you wire the 4-wire interface correctly during installation?

Connect the 4-wire interface to a 12 V PWM header; the fan operates from 7.0-13.4 V and draws 1 A at 12 W.

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