Congratulations to the ICStation team! They have developed this wonderful water level sensor module :http://www.icstation.com/product_info.php?products_id=3258 by great efforts.This module with small size and high cost-effective is easy to use.In this article, we will use the digital storage oscilloscope to show you how the output voltage change with the immersion depth.What’s more,we will show you an interesting actual application case.You will have a clear idea of how this module to realize the function of water level alarm. Features: Simple ,Easy to use,Small size,Light, High Cost-Effective Applicable Occasion:Water level alarm design Parameter: Working Voltage: DC5V Working current: Less than 35mA Type : Analog sensor Testing area: 40mm x 18mm Working temperature: 10℃-30℃ Working moisture: 10%-90% without condensation Fixing hole size: Φ3mm Product size: 60mm x 22mm More details:http://www.instructables.com/id/Water-Level-Sensor-Module-for-Arduino-AVR-ARM-STM3/
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Oh wow, a water level sensor working with conductivity.... How much do you trust in incrustation and long-term stability? This is just a arduino toy and gadet, nothing to work with for a long time, not even months or a year. You will not find any water or liquid-level sensors with that working principle in the field - and there is a good reason for that. Trust it as far as you can throw it - 4 bucks for a corrosive PCB !!
Thank you for your reply! This module is designed for the DIY hobbyist and provide them a low-cost and easy-to-use water level detection scheme.The stability and durability of this module can not reach the industrial standard.But we use the high-quality PCB board to improve its stability and durability.If you just want to DIY for fun,this module will be a good choice.