Hello, I recently bought these sensors and they are good except the bottom side sensor broke after the second use. I went to vacuum, minus 30 and even with a screw I can't return it. With a set screw you can adjust it by just a bar or two. The rest of the sensors are great. I love her. I would like to give 5 stars. If there are no problems with the sensor, then I definitely give 5 stars.
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