Miner Cooling Fan Speed Tester 4-wire 6-wire Cooler Testing Device

Miner Cooling Fan Speed Tester – 4-Wire & 6-Wire PWM Testing Device

This fan speed tester evaluates 4-wire and 6-wire 12V PWM fans used in Antminer, Whatsminer, Innosilicon and Avalon miners. Results display directly on screen with both automatic and manual PWM modes selectable. The bilingual interface (Chinese / English) makes it accessible to international repair shops. Supports 4-pin, 6-pin, 4P and 6P connector types.

Why a Dedicated Fan Tester Saves Time

Mining repair shops process dozens of fans per week. Testing with a multimeter and guesswork misses intermittent faults and wastes time on fans that appear functional but fail under load. This tester provides a controlled 12V supply, adjustable PWM duty cycle and real-time RPM measurement, allowing you to verify each fan's health in seconds — pass or fail, no ambiguity.

How to Use

Connect the fan to the matching terminal (4-pin or 6-pin). Select auto or manual PWM mode. The tester powers the fan and displays RPM, PWM response and fault status on screen. Use manual mode to sweep PWM duty cycle and check for stalls or speed instability at different operating points.

Fan Speed Tester Specifications

Related Fan Testing & Diagnostic Tools

• IceRiver KS5 Fan Simulator – Water / Hydro Cooling
• Whatsminer 6-Pin to 4-Pin Fan Adapter Cable
• 4-Pin Fan Simulator – Antminer / Innosilicon / Goldshell
• 6-Pin Fan Simulator – Innosilicon / Whatsminer

Equipping a fan testing bench? Contact us at contact@lys-sz.com for fan testers, simulators and diagnostic tools. Worldwide shipping from our Shenzhen warehouse.