12V DC 4-Wire Fan Speed Controller, 12V DC PWM 4-Pin Fan Control with Digital Temperature and Speed Display, Fan Speed Controller

Button operation instructions: “+” and “-” buttons: switch between display modes during operation; Adjust parameter values ​​during adjustment (long press for continuous adjustment). The “OK” button has three functions: 1. During operation, a short press takes you to fixed output settings (manual speed adjustment), range 1-100%. Short press again to save and exit the menu. 2. During operation, you can access the temperature parameter settings with a long press. Use the “+” and “-” buttons to change the values. Short press “OK” to cycle through settings: (* indicates numbers) Acceleration temperature “L**”, Full load temperature “H**”, Stop temperature “C**”. Short press “OK” again to save and exit. 3.After turning off, press and hold the “OK” button and turn on the device to enter function settings. Make changes using the “+” and “-” buttons. Short press “OK” button to confirm, save and exit. This parameter changes the PWM output direction to: Forward/Reverse “P1/P-1”. Short press the “OK” button again to save and exit. Note: This is an inverse time configuration. For some fans, higher temperatures result in lower speeds. This inverse time configuration does not change the direction of forward/reverse rotation of the fan! Satisfaction Guarantee: Your satisfaction is our highest priority, if you have any problems with our product, please contact us by email (with photos), we will solve your problem within 24 hours.