product description
Features: 1. Onboard LM358 chip.
2.100 times the gain circuit design.
3. Onboard 10K adjustable resistance, adjustable magnification.
4. On-board power indicator.
5. The main pin of the chip has been drawn, you can directly input and output signals.
6. Working voltage: 5-12v.
7. Size: 32.7 * 13.3 mm.
