for 4B 3B 3B Mini PWN Speed Adjustable Cooling Fan Pure Copper Metal Base Radiator with Switch

1. for all models of , with switch control PWM mode and adjustable speed.2. The switch has three settings: ON-OFF switch and PWM mode. PWM can be controlled and can be turned on at any specified temperature.3. All copper material, the base has a built-in radiator to make the CPU cooling effect better.4. The cooling fan uses only 12 GPIO pins, allowing other GPIO pins to be used for other projects.Colour:BlackMaterial:ABS+copperPackage Contents:1 x radiatorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.