DGZZI Water Level Sensor Module 2PCS Rain Water Level Liquid Surface Height Depth Detection Sensor Module for Arduino Raspberry Pi

Llego solo un sensor, aún cuando la descripción dice 2 unidades.

These probes : a. Don't have a long measuring depth (just the length of the probe, b. corrode easily when sitting in water for a couple of hours, c. Give inconsistent measurements that are hard to even reconcile to get an average depth.

Got this sensor and was rather pleased with the readings, a couple days in the readings were wildly inaccurate jumping all around the place from min to max values. Next day it was constantly reading 0. Turns out it was absolutely corroded. I expected some corrosion, I didn't expect it within a few days of being used. Major disappointment. FWIW if you're looking at these to monitor water levels. Expect corrosion. You can minimize corrosion by only powering this on when you take readings.

Some of the reviews mention that it doesn't work as advertised, but this likely has to do with the wrong attenuation that is used. I tried this sensor using esphome and had to set the attenuation to auto to get it to work. However, after a day in the water, this sensor is completely corroded. Too bad..

just touching it reads about 800ish. not a quality product, corroded after just 3 hours submerged