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Support low temperature shutdown fan (PWM off or extended relay to turn off fan power );. Under power off state, keep pressing “OK” button to send power, enter function setting, modify by “+” “-” button, short press “OK” button to switch setting item, set PWM output frequency 20/2.5KHZ in turn.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.