2pcs LJ12A3-4-Z/AX Proximity Switch Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close 6-36V

I ordered the two-pack and received both, well packaged. Handy wiring info attached to the harness. I bench tested the sensors and they triggered down to 4 VDC, so I was encouraged that they would work with my 5V Arduino controlled CNC router. I used the first one as a Limit/Homing switch for an upgraded Z axis. Now that I know they work for my intended purpose, I'll be ordering another two-pack to upgrade the other axes from the original mechanical, normally-open limit switches to these normally-closed inductive switches. A NC setup is safer and contactless switches are more accurate, so a win-win for me. Two bonuses are these look awesome on my project, and they have a wide range of adjustability, so mounting them is a snap.

Works exactly as described. Using these for all 4 limits on a custom CNC build, they’re working flawlessly on the 5v of the Flexihal breakout. They seem to trigger around ~3mm and are fast enough to stop a crash at 500ipm

calidad excelente, duras, resistentes

Using for CNC end stops but they constantly trigger. An RC filter or twisted and shielded wire is absolutely required.

works on tachometer used instead of magnetic pickup . magnet kept picking up shavings from lathe

This ships as a single unit not 2 as described. It is also a NO switch not NC as shown in the descriptiom

using it as a Z probe on my ender 3. the description says "6v-36v" but it works fine off 5v. according to the deviation test this probe has 0.001mm deviation

I’m using it for a snow blower, as to not over lift, works fine.