This fan controller was designed to allow cooling with minimal noise emissions and maximum performance.
This controller is also equipped with a PWM function.
Control up to three fans individually or simultaneously. The blue LED lighting can be switched on and off manually or it can be activated with the noise activation.
The CPU fan must be controlled by the FAN1 channel to prevent possible problems from other low speed fans.

Technical specifications:
Dimensions: 102x110x25,5mm
Weight: 201g
Voltage: 12V and 5V
Operating voltage: 11~13V and 4~6V
Channels: 3
Maximum output power: <30W
Voltage range fan 1: 7~12V
Voltage range fan 2,3: 0~12V
LED colour: Blue

An English mounting manual can be found here

Extent of delivery:
1 x DeepCool 3.5 Rockmann fan controller