XD-21 LM358 Gain Amplification Module Operational Amplifier Module
 
Specifications and Features :
	
LM358 chip onboard.
	
100 gain of the circuit design.
	
10K onboard adjustable resistance, you can adjust the magnification.
	
Onboard power indicator.
	
The chip has led major pin can be directly input and output signals.
	
The working voltage: 5 – 12V.
	
Size: 32.7 x 13.3 x 13 (LxWxH)mm.