Cooler fan speed controller

Cooler Master MasterFan Pro 140 AF RGB with Controller 140mm LED 3-pack

G-STORY Cooling Fan for PS5,Fan Cooler System for PS5, Fan Speed Automactically Adjusted by Temperature(℃/℉), Low Noise, 3 Speed 1500/1750/2000RPM (140MM) with RGB LED

Portable 3 Speed Neck Fan USB Rechargeable Lazy Neckband Bladeless Cooler Fans Black

Waveshare CM5 Cooling Fan Dedicated All-in-one 3007 Cooler Lüfter, Compatible with Raspberry Pi Compute Module 5, 5V Power Supply, PWM Speed Adjustment, with Thermal Tapes

2 St Fläkt Adapter PWM Fan Hub, 3 Pin 4 Pin Fläkt Adapter, 8 Way Splitter, 12V Speed Controller

PWM Driver Module, DC 12V 4-Wire PWM Fan Speed ​​Controller Governor Module för PC termostat

AC to AC0- Motor Speed Controller Continuous Control Switch Regulator for Pump Grinder Electric Oven Fan (2000W)