Limit Switch

This is SN04-N inductive proximity sensor, a non-contact detection component for industrial automation systems.

Function: It detects the presence of metallic objects within a 4mm sensing range without physical contact, triggering a signal output when a target is detected. This enables precise positioning, counting, and safety interlocking in automated equipment.

Structure: It features a rugged blue plastic housing, a 2m PVC cable with color-coded wires (brown for positive, blue for negative, black for signal output), and mounting screws for easy installation. The sensor is marked with its model, operating voltage (6-36V DC), and NPN normally open (NO) output configuration.

Application: Commonly used in CNC machines, conveyor systems, packaging equipment, and assembly lines where reliable, wear-free object detection is required. Its compact design and IP65-rated waterproof housing make it suitable for harsh industrial environments.