Controller PWM Fan Speed Temperature 12V:
Specifications:
Working Voltage: 12V DC
Circuit Load Capacity: maximum current per output 4A
Temperature Range: 35 Deg C to 90 Deg C
Fan Speed Range: 20-100% PWM Speed
Size: 50 x 43mm
Here is a link explaining this unit: https://www.electroschematics.com/fan-speed-controller
There are 5 Buttons to set your fan speed according to Temperature:
TFL = 1, TP1 = 2, TP2 = 3, BF1 = 4, BF2 = 5
(TFL) 20% or 40% Minimum Fan Speed Setting:
A) If TFL is off, minimum PWM fan speed is 20% and maximum PWM fan speed is 100%
B) If TFL is on, minimum PWM fan speed is 40% and maximum PWM fan speed is 100%
(TP1 & TP2) Temperature Zones and Fan Speeds:
A) If TP1 is off, and TP2 is off: If temperature is less than 35deg C, fan will run at minimum speed (20% or 40% Settable) and if Temperature is more than 45 deg C, fan will run at 100% speed
B) If TP1 is on, and TP2 is off: If temperature is less than 40deg C, fan will run at minimum speed (20% or 40% Settable) and if Temperature is more than 55 deg C, fan will run at 100% speed
C) If TP1 is off, and TP2 is on: If temperature is less than 50deg C, fan will run at minimum speed (20% or 40% Settable) and if Temperature is more than 70deg C, fan will run at 100% speed
D) If TP1 is on, and TP2 is on: If temperature is less than 60deg C, fan will run at minimum speed (20% or 40% Settable) and if Temperature is more than 90 deg C, fan will run at 100% speed
(BF1 & BF2) Buzzer Alarm Setting:
A) Fan 1: If BF1 is on, and fan stops, alarm will sound / If BF1 is off, and fan stops, alarm will not sound
B) Fan 2: If BF2 is on, and fan stops, alarm will sound / If BF2 is off, and fan stops, alarm will not sound
If BF1 and BF2 both are on, (FAN1 and FAN2) any one or both stops, the alarm will sound
*Above range only for PWM range, the actual control effect will vary depending on the fan. Numerous fans can be connected to a single fan output (not exceeding total of 4 Amp)
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https://www.bidorbuy.co.za/seller/4397469
