DIGITEN Hall Sensor Proximity Switch NPN 3-Wires Normally Closed NC with Magnet

First one didn't work. Was conducting all the time. The second one works fine. The sensor switches the negative if that matters to anyone. That info isn't in the description but it was important for my usage. More good information is it senses polarity of the magnet. It won't switch if you turn the magnet over.

Did the job, used it on my CNC, noticeable proximity delta between aluminum and steel.

Good value, item returned because it did not work for my kill switch application.

Used on an engine dyno shaft. Pulses are great. Used at over 8000 RPM.

We had a fire and wiring on old sensor burnt to crisp but their tach assembly still works, a tad melted but impressive just the same! Tested new sensor with old Tach against new kit, still spot on!!! Yeah was a redneck setup but all that matters is that it works for testing purposes!