Product description
Input voltage range : 3-35V DC
Output voltage range : 3.5-35v DC
Voltmeter range:4 to 40V,error +-0.1v
L * W * H = 6.7 x 4.3 x1.2 cm(approx.)
When adjust the blue potentiometer ,please use a multimeter to monitor the voltage
Rotating Clockwise can rise the voltage while rotating counterclockwise could lower the voltage
When the module output voltage can not be adjusted ( the output voltage is always equal to the input voltage ) Please adjust the potentiometer counterclockwise 20 laps (20 turns) or more till it works.
The image is for illustration