4-P

Compact 4-wire PWM fan speed controller for DC 12-60 V systems, providing manual knob control for precise fan speed adjustment and quiet operation. Key benefits: - Precise manual control of fan speed to match cooling needs and reduce noise during low-load operation. - Wide input range to support a variety of power environments while delivering stable output for 12 V, 24 V, 48 V and other compatible fans. - 3 amp output capability for reliable operation of high-performance 4-wire fans within the current limit. - Simple on and off function built into the knob for fast, intuitive operation. What this module does and why you need it: - Controls 4-wire PWM fans that follow the Intel 4-pin PWM specification, enabling independent PWM control of fan speed while preserving dedicated power rails for the fan. - Does not convert supply voltage, so the controller stays compact and efficient while requiring the supply voltage to match the fan voltage to avoid damage. - Low standby draw reduces extra load on the power rail when no fan is connected. Key specifications: - Operating voltage: DC 12 to 60 V for the controller board, with the requirement that the power supply matches the fan rated voltage. - Maximum fan current: not more than 3 A, limited by the switch and connectors. - Board current consumption: less than 20 mA when no fan is connected. - PWM signal mode: 5 V at 25 kHz. - PWM output range: 0 percent to 100 percent, with adjustable start position from 0 percent to 60 percent. - Output connector: 2510-4P offset 4-pin fan connector, standard CPU and chassis fan pinout, 2.54 mm pitch. - Board dimensions and mounting: PCB 28.5 mm x 21 mm, knob extension 15 mm, knob mounting hole 7 mm, PCB mounting hole diameter 3 mm. Compatibility and important usage notes: - This is a true 4-wire PWM controller and only works with fans that follow the 4-wire PWM fan specification (most 12 V to 48 V 4-wire fans are supported). It cannot control 2-wire or 3-wire fans. - The controller does not perform voltage conversion. Always power the fan and controller with a supply that matches the fan rated voltage to avoid burning the fan or damaging the controller board. - For fans that draw more than 3 A, use an external power connection for the fan power rails and connect only the PWM control and tachometer signal lines to this controller. In that arrangement, connect the fan positive and negative directly to the external power supply, connect the fan negative to the controller ground, and connect the fan PWM control and speed sense pins to the corresponding controller pins. Typical applications: - PC cooling and chassis fans where precise, quiet control is required, including CPU, GPU or case cooling setups. - Industrial equipment and control cabinets that use 4-wire PWM fans at 12 V, 24 V, 48 V or other compatible DC voltages. - Custom cooling systems for 3D printers, small servers, or embedded systems where manual speed adjustment and