custom 1Pcs For arduino development board soil moisture detection module hygrometer humidity sensor DIY robot smart car

We are a manufacturer of electronic components, electronic modules for a large number of products.We are the factory!With more than 10 years of PCB development experience, the product quality is good, the price is excellent.A large number of wholesale sales of global buyers, welcome to purchase. A description of the  What is a simple water sensor can be used to detect soil moisture when the module generates soil moisture deficit a high level, and vice versa low output. Use this sensor produced an automatic plant watering device, so that the plants in your garden without the people to manage. 2 adjustable sensitivity adjustment of the digital blue potentiometer (Figure) Operating voltage 4 3.3V-5 v- Module dual output mode, the digital output is simple, more accurate analog output. A fixed through hole for easy installation 7 small boards, PCB size: 3 cm * 1.6 cm 8 power indicator (red) and digital switching output indicator (green) 9 LM393 comparator chip, stable Two small interf