Tl-136 Tl 136 Shelly,Water Level Sensor,Submersible Level Sensor 4-20ma 2m Pressure,Sensors TL‑136 Liquid Level Transmitter Water Level Sensor Detector 24VDC 4‑20mA Output(Range 0-3 Meters)

I got this water pressure sensor to measure the depth in a holding tank on a project I'm still working on. By visual inspection, the sensor seems well-built. The machining on the stainless portion is clean, the cable is sturdy, shielded, and reinforced, it appears. The rubber boot covering the cable's entrance into the metal portion can be pulled back, meaning that it's there more for protection and maybe strain relief than for waterproofing. The waterproofing comes from the visible thread sealant and, I guess, cable gland at the cable's entry point.I'll update this review with the electronics performance as soon as I'm able to test it in practice.

When I opened the package, my first thought was "Wow! This is the real deal." The sensor feels super solid, and it's really well built.After the first impressions wore off, though, I was incredibly disappointed by the lack of documentation. It included one sheet of paper with very basic information. Some detailed wiring diagrams or calibration curves would be incredibly helpful.Also, when I bought the sensor, the listing advertised a host of sensor output protocols: 4-20mA, 0-10V, RS485, etc. I was really hoping to use RS485 for my project, but the sensor doesn't actually support that. The listing has since been updated, and now only the 4-20mA protocol is mentioned.