NJK5002C NPN three-wire normally open hall sensor proximity switch Key benefits - Solid-state proximity sensing with no moving parts for reliable long-term operation - Simple three-wire NPN configuration with normally open output that sinks current when triggered - Easy integration with PLCs and controllers that accept sinking inputs - Handles up to 200 mA load current, suitable for common automation signals and indicators - Detects magnetic field presence, enabling contactless sensing of magnets or ferrous objects What it is - The NJK5002C is an NPN three-wire normally open hall sensor proximity switch that uses a Hall effect element to sense magnetic fields - When a magnetic field strong enough to activate the sensor is present, the output switches from open to conducting (sinks current) Key specifications and characteristics - Type: NPN three-wire normally open hall sensor proximity switch - Output: NPN sinking (open when not triggered; closes to ground when triggered) - Load current: Maximum 200 mA - Detection principle: Hall effect based proximity sensing of magnetic fields - Normal state: Output is open (no current flows to the load) until activation by a magnetic field How it helps your application - Non-contact detection: Sense presence of magnets or ferrous objects without mechanical switches, reducing wear and maintenance - Simple interfacing: Use with standard sinking inputs on PLCs and controllers; convenient for automation wiring - Fast response: Provides a quick electrical signal when a magnetic field is detected, enabling precise location or end-of-travel sensing - Versatile sensing: Suitable for equipment doors, end stops, rotary or linear position sensing, and other proximity-based control tasks Recommended use scenarios - End-of-travel or position sensing on a linear actuator or slide system: Place a magnet on the moving part; when the magnet reaches a fixed sensor position, the NJK5002C output sinks current to indicate the stop point - Magnetic door position sensing on equipment enclosures: Mount the sensor to detect when a door or access panel with an integrated magnet is closed, enabling safe interlock or control signaling - Conveyor or indexing systems: Mount magnets on rotating or moving parts; sensor provides a clean electrical signal to synchronize indexing, stopping, or quality control checks installation and wiring notes - Connection concept: three-wire design with supply, ground, and output; output sinks current to ground when the magnetic field is present - Load considerations: ensure the load current does not exceed 200 mA - Electrical compatibility: intended for use with sinking inputs on controllers and PLCs - Mounting and datasheet: for mounting dimensions, enclosure material, and detailed electrical characteristics, refer to the official NJK5002C datasheet Notes on available details - Size and enclosure material are not specified here; consult the product datasheet for exact dimensions and packaging - This description preserves the model, function, and core capabilities of the NJK5002C without introducing additional specifications or claims In summary The NJK5002C provides a reliable, non-contact magnetic field sensing solution with a simple NPN three-wire normally open output. It is designed for straightforward integration with automation systems, supports a load current up to 200 mA, and offers clear signaling when magnets or ferrous objects are present. Suitable for end-of-travel, door position, and proximity-based control applications, it delivers solid-state performance with minimal mechanical wear.