3Pcs JSN-SR04T Integrated Ultrasonic Distance Measuring Sensor Transducer Module Waterproof...

I didn't test them at all yet. But they look good.

Excelente atencion fecha de envio corresponde al lo publicado, recoemndable

Have not used them yet but they look like they should work as advertised.

2 of the boards were DOA, 1 of the sensors failed rapidly. 1 sensor appears to be returning arbitrary values. This particular purchase was a bust. I'd had such good luck with these sensors in the past that I didn't expect a failure at all of the sensor (there isn't much to them). In my application, I cut off the offset mounting ring and trim the rubber insulating grommet, install the sensor in the end of a piece of 3/4" PVC pipe, which then serves as a mount. To lock it in place, I made a ring of hot glue around the sensor edge protruding just slightly from the pipe, then buried it from behind in about a 1/2" of hot glue. I've made about a dozen of these rigs. Some have been running 1 sample per second for over a year with no problem. I may buy again to see if this was a fluke. I have not tried to return since I modified the mounts and have one sensor installed 200 miles from my home. I expect I'd need to return all three together, so just gonna suck it up and figure this was a "1 sensor for the price of 3" kind of deal... :D

Bought this to measure the remaining salt in my water softener. So far working great and seems to be holding up well in the salty environment. When using this unit with ESPHome's utrasonic platform, you have to set the pulse_time value to at least 20us. The default of 10us is too low, and will result in no or erratic values.