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Small rectangular green circuit board with a black temperature sensor probe extending from it

Vszerda

Vszerda 12V 1A Fan Speed Controller with 300mm Sensor

SKU CH-07NB-PKB5M

Automatic 12V 1A fan controller adjusts speed from 30°C to 50°C with 300mm waterproof sensor for 2, 3 or 4-wire fans

  • Automatic temperature-based speed control reduces noise and saves energy
  • Works with 2, 3 or 4-wire fans up to 12V and 1A total current
  • Waterproof epoxy-sealed sensor probe withstands up to 110°C
  • Dual modes: fixed 30°C start or adjustable 15-50°C start range
  • Compact 45 x 25 x 30 mm board with M3 mounting holes

Automatic Temperature Control

The Vszerda 12V 1A controller adjusts fan speed automatically based on ambient temperature, eliminating the need for manual adjustment. It provides stepless speed regulation where higher temperatures produce faster fan speeds, saving energy and reducing noise. The unit suits builders who want hands-free thermal management for 2-wire, 3-wire or 4-wire fans within the rated limits.

Current and Voltage Limits

The governor accepts any fan operating at or below 12V and drawing less than 1A, including PWM and brushless types; total current for multiple fans must remain under 1A. Three-wire and four-wire fans connect only their power cable to the controller. Buyers needing to drive fans above 1A or at voltages beyond 12V cannot use this device.

Dual Mode Temperature Ranges

Fixed mode starts the fan at 30°C, increases speed linearly to 50°C and runs at full speed above 50°C. Adjustable mode lets the user set a start temperature between 15°C and 50°C with a full-speed point 20 degrees higher, up to 70°C. The epoxy-sealed 300mm probe withstands 110°C, but the controller cannot support configurations that require start or full-speed thresholds outside the stated ranges.

How it compares

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Price $18.99
Typical for this category: the median of 8,338 items is $19.99.

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Specifications

No published specifications for this item yet.

Questions about this item

Fixed or adjustable start temperature — which mode suits my build?

Choose fixed mode for a simple 30 °C start and 50 °C full-speed range, or adjustable mode to set start anywhere from 15 °C to 50 °C with a 20 °C span to full speed.

The box says 1 A at 12 V — what does that limit in my case?

It caps the total fan current to 1 A, so you can run one or several 2-wire, 3-wire or 4-wire fans as long as their combined draw stays below that figure.

The controller mentions a 300 mm probe — what standard or interface does that use?

The probe is a simple two-wire thermal sensor on a 300 mm cable with epoxy-sealed tip; it connects directly to the board and has no digital protocol or bus.

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