2PCS M12 Inductive Proximity Sensor Switch, NPN NO DC6-36V 4mm Detection Distance, LJ12A3-4-Z/BX...

The media could not be loaded. Solid value overall for a pair of these. I found no issues in initial testing with a 6v source/load, circuit closure was predictable and consistent. 5 stars for quality and value, would order again, and will update with any unexpected results in further use.

The media could not be loaded. Solid value overall for a pair of these. I found no issues in initial testing with a 6v source/load, circuit closure was predictable and consistent. 5 stars for quality and value, would order again, and will update with any unexpected results in further use.

The 2PCS M12 Inductive Proximity Sensor Switch, model LJ12A3-4-Z/BX, offers a cost-effective and efficient way to upgrade your 3D printer's bed leveling system. Based on inductive proximity technology, this sensor accurately detects the presence of metallic objects, making it ideal for use as a bed probe in 3D printers with steel beds. Key Features and Performance: Accurate and Reliable Detection: The sensor utilizes inductive proximity sensing to detect the presence of metallic objects within its 4mm detection range. This allows for precise and reliable bed leveling, ensuring a consistent distance between the nozzle and the print bed, which is crucial for successful prints. NPN NO Output: The sensor features an NPN normally open (NO) output configuration. This means it sends a signal when a metal object is detected and remains silent when no metal is present. This type of output is compatible with most 3D printer control boards. Wide Voltage Range: The sensor operates within a wide voltage range of DC 6-36V, making it compatible with various 3D printer power supplies and electronics setups. Sturdy Construction: The sensor is housed in a robust M12 threaded metal casing, ensuring durability and protection against environmental factors. The cable is also well-shielded, preventing interference and ensuring reliable signal transmission. Easy Wiring: The sensor has three wires (brown for positive, blue for negative, and black for signal), making it easy to connect to your printer's control board. The wiring diagram is typically included, simplifying the installation process. Pros: Accurate and Reliable: Provides precise and consistent bed leveling results. Wide Voltage Range: Compatible with various power supplies. Sturdy Construction: Durable and resistant to wear and tear. Easy Wiring: Simple to connect and integrate into your 3D printer setup. Affordable: A cost-effective alternative to more expensive sensor options. Cons: Limited to Metallic Beds: The sensor only works with steel or other metallic beds, relying on inductive proximity sensing to detect the bed's surface. Requires Manual Leveling: The sensor itself doesn't automate the leveling process. You'll still need to manually adjust the bed screws based on the sensor's readings. Overall Impression: The 2PCS M12 Inductive Proximity Sensor Switch is a reliable and affordable solution for upgrading your 3D printer's bed leveling system. Its accuracy, wide voltage range, sturdy construction, and easy wiring make it a valuable addition to any 3D printing enthusiast's toolkit. While it's limited to metallic beds and requires manual leveling adjustments, its performance and value outweigh these minor drawbacks. Recommendation: If you're looking for a cost-effective and reliable bed leveling sensor for your 3D printer with a steel bed, this M12 inductive proximity sensor is highly recommended. It's a simple yet effective upgrade that can significantly improve print quality and consistency.