Hailege 4pcs LM358 Weak Signal Amplifier Voltage Amplifier Secondary Operational Amplifier Board Single Power Signal Collector 3.5-24V

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LM358 Weak Signal Amplifier Voltage Amplifier 3.5-24V DC
Two potentiometers on the board are rotated counterclockwise to increase the multiple.
LM358 is the core two-stage operational amplifier, which can amplify DC weak signals.
It amplify signals of millivolts or even weaker, and has two potentiometers to be rotated counterclockwise to increase the multiple.