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} Usage Tips
The top 2 terminals become the input and the middle two terminals become the output
The lower the resistance (more water present)
Transistor Radios & General purposes
The LM139 series consists of four independent precision voltage comparators with an offset voltage specification as low as 2 mV max for all four comparators
20x4 LCD Module (Green) Offers } Usage Tips20x4 LCD Module (Green) This is an 20 x 4 Parallel LCD Display that provides a simple and cost effective solution for adding a 20 x 4 Black on RGB Liquid Crystal Display into your project. The display is 20 character by 4 line display that has a very clear and high contrast Black text upon a Green background backlight. This is the Green backlight LCD 20 x 4 display. It is fantastic for Arduino based projects. This LCD 20 x 4 Parallel LCD Display with
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