Fangrui Product Details Four-wire Pwm Fan Temperature Control Governor With Control Signal 10v, Support Common Ebm Four-wire Fan. Support Conventional High-voltage Ec Fan Four-wire Control (10v Pwm Signal);support Low Temperature Shutdown Fan (pwm Off Or Extended Relay To Turn Off Fan Power ). Wide Voltage Operation Dc11-55v; Supports 2.5khz And 20khz Frequency Settings; Supports Anti-timing Fans. Power Supply Voltage: Dc11-55v (circuit Operating Voltage) Working Current: Less Than 0.1a Fan Current: Less Than 5a (on-board Connector Withstand Capability, If You Need To Control Higher Power, You Only Need To Take The Power Cord Separately) Pwm Range: 5-100 Or 0 (% Plus Or Minus 0.) Pwm Frequency: 20khz Or 2.5khz () Pwm Signal Amplitude: 10.5v (no Load) Temperature Measurement Range: -9.9-99.9 C Temperature Measurement Error: Error Within 0-50 C Is Less Than 1.2 C, Other Range Error Is Less Than 2 C Interface Introduction: Power Connector (blue Screw Terminal): The Main Power Input Interface Supplies Power To The Con