Description

SN04-N Inductive Proximity Sensor Switch
The SN04-N is a rectangular-shaped inductive proximity sensor switch used for non-contact detection of metallic objects. Functioning as a solid-state limit switch, it emits a high-frequency electromagnetic sensing field from its front face. When a metal target enters this field, the sensor triggers its internal transistor switch without any physical contact, making it highly reliable and immune to wear.

* Sensor Type: Inductive Proximity Sensor (detects ferrous and non-ferrous metals)
* Output Configuration: NPN Normally Open (NO) 3-wire system
* Sensing Distance: 4 mm (standard detection range for iron targets)
* Operating Voltage: DC 10V to 30V (broad DC compatibility for industrial and control circuits)
* Output Current: Up to 300 mA (can directly drive small relays, logic inputs, or microcontrollers)
* Response Frequency: 500 Hz (allows for high-speed object counting and position tracking)
* Indicator Light: Onboard red LED indicator that illuminates instantly when a target is detected
* Enclosure Rating: IP67 waterproof and dustproof sealed ABS plastic housing
* Applications: Widely used in 3D printer auto-bed leveling, CNC machine axis limit switches, automated conveyor counting systems, and industrial automation control packaging line alignment