Ever needed a sensor that picks up on metal parts zooming by, without any clunky mechanical switches getting in the way? These SN04-N inductive proximity sensors do just that, sensing ferrous metals from up to 4mm away through non-contact induction. It's the kind of tech that feels like magic but runs on solid engineering.
In workshops, garages, or maker spaces, traditional limit switches wear out fast from constant bumping. Wiring gets messy, and false triggers from dust or vibration kill reliability. These sensors cut through that noise: IP67-rated housing shrugs off water, oil, and grime, while the stable NPN NO output (300mA max) delivers clean signals every time.
Blue anodized aluminum body not only looks sharp but dissipates heat during long runs.
Hook one to your CNC machine to halt the spindle at exact stops, or integrate into a conveyor to count metal pieces flying past. Arduino enthusiasts love them for robotic arms that grab without smashing, and PLC tinkerers use them for automated doors or sorting lines. I've wired these into a homemade vending machine—the sensor nails every can drop without missing a beat.
Each sensor draws minimal power (under 10mA), so they're ideal for battery-powered gadgets too. Response time under 1ms means no lag in fast-moving applications.
This 4-pack gives you spares for experiments or multi-sensor arrays. Easy wiring: brown for +, blue for ground, black for output. Whether you're prototyping a security gate that buzzes on metal approach or automating your garage lift, these sensors make it straightforward and foolproof. Dive into inductive sensing and watch your projects level up—effortlessly.
