Hall magnetic switch NJK — a compact proximity inductance sensor for reliable position and polarity detection. Key benefits Reliable contactless switching: Hall-effect sensing provides wear-free operation for long service life in repeated detection tasks. Flexible installation: Available in M8, M12, and M18 form factors to fit tight spaces or standard sensor mounts. Simple electrical integration: NPN output with selectable normally open (NO) or normally closed (NC) behavior for compatibility with common control systems. Direct compatibility with NJK 5003 and LM18 applications: Supports polarity induction use cases for those models without extra conversion. Consistent 24 V operation: Designed for standard 24 V control supplies to simplify wiring and power planning. Key attributes Function: Hall magnetic switch / proximity inductance sensor for non-contact detection and polarity induction. Sizes: M8, M12, and M18 housing/connector options to match mechanical requirements. Output type: NPN semiconductor output; available in normally open (NO) or normally closed (NC) configurations. Voltage: 24 V supply. Models and compatibility: Specifically suits NJK 5003 and LM18 use cases while maintaining NJK family functionality. Practical applications Conveyor position sensing: Detect passing metal parts or fixtures at specific positions using the appropriate M8/M12/M18 sensor size, feeding NPN NO/NC outputs into PLC inputs for process control. Door or hatch monitoring: Non-contact detection of closed/open states with polarity induction for NJK 5003 or LM18 implementations, avoiding mechanical microswitch wear. Automation end-stop and homing: Compact M8 or M12 sensors provide reliable end-of-travel detection for pneumatic actuators or linear guides, integrated with standard 24 V control logic. Installation and compatibility notes Choose M8, M12, or M18 size based on mounting space and mechanical interface requirements. Select NO or NC wiring behavior according to control system needs; the sensor provides NPN output compatibility. Designed for direct use with NJK 5003 and LM18-related setups requiring polarity induction and 24 V operation. Ordering reminder Specify model size (M8, M12, or M18), desired output configuration (NPN NO or NPN NC), and confirm compatibility with NJK 5003 or LM18 where required.