DEVMO DC 12V 5A PWM 4 Wires PC CPU Fan Thermostat Automatic Temperature Control Speed Controller Board Speed Controller Temperature Probe Buzzer for Arduino Heat Sink

Function setting switch Description: TFL (No. 1): The lowest temperature channel PWM setting, when ON state FAN1 PWM minimum is 40%, when OFF the minimum PWM of FAN1 is 20%. TP1 TP2 (No. 2,3): Temperature channel control temperature zones are interpreted as follows (need to used with the temperature probe): TP1 TP2 Accelerating temperature Full speed temperature OFF OFF 35° 45° ON OFF 40° 55° OFF ON 50° 70° ON ON 60° 90° When the temperature lower than the accelerated temperature, then output at the minimum rotation speed; when it exceed over the full temperature, then always output at full speed. BF1 BF2 (No. 4,5): corresponds FAN1 FAN2 stall alarm function switch, when the corresponding open channel fan break down, the controller will alarm with soundand light (works with buzzle), alarm will automatically eliminated when the fan is rotated recovery . If BF1 and BF2 both are open (ON), the FAN1, FAN2 h Package Included: 1 x DC 12V Four Wire Thermostat PWM Fan Speed Controller Module