Review on ⚙️ Adjustable Onyehn Voltage Controller 1803BK by Russ Mashlan
Quality control is not the best
Of the 4 I've used, 1 didn't work at all and 2 didn't have the red LED lit. Cheap as chips but quality control is below standard. Note that when mounting to the case with the leveling knob, the front of the 4mm PCB will break off. If you don't understand this, you can't install it.
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