Product overview PUD05NP and PUD100N are opticalelectronics sensors designed for label detection, counting, positioning, and level sensing in industrial environments. PUD05NP is an economical fourwire general model for applications where very speed and extreme accuracy are not required. PUD100N is the precision model with a builtin learning mode and selectable normally open and normally closed output behavior. Key benefits Practical and economical choice for label handling and basic sensing needs. Clear wiring and straightforward setup reduce installation time and downtime. Robust design and stable longterm performance for continuous industrial use. PUD100N offers an automatic learning function to simplify calibration and improve detection reliability on variable labels. Core specifications Type: Opticalelectronics sensor Theory: Optical sensor Output options: NPN and PNP wiring selectable; analog sensor compatibility Power supply: DC 12 to 24 V Connection: Fourwire mode; standard wire length 2 m for the general model Wiring colors: Brown positive, Blue negative, Black NPN output, White PNP output Material: Mixture Stability: Can be used stably for a long time Design: Robust, easy to maintain Easy to install: Simple operation and quick installation concerned chemical: Acetochlor PUD05NP highlights Economical, practical model for slower applications where speed up to five detections per second is sufficient. Fourwire connection, NPN and PNP outputs available via dedicated wires. Simple setting and installation for labeling, counting, and label stripping tasks. PUD100N highlights and operating notes precision model with status and output indicators. Indicator lights: Red indicates power and status, Green indicates output signal state. Wiring: Brown to positive, Blue to negative, Black for NPN output (use white for PNP where applicable). Learning and output mode procedure: On powerup the red indicator is on. The green indicator reflects the current normally open or normally closed state. Hold the button for about 4 seconds to enter learning mode. The red indicator will flash while the sensor learns the label position. After learning completes the red indicator stays on. Hold the button for about 8 seconds to toggle between normally open and normally closed output. The green indicator will switch to reflect the output state. Repeating the hold sequence allows you to cycle between learning and output mode switching. Why customers choose these models Straightforward wiring and clear indicator feedback reduce setup errors. Suitable for production lines where reliable label detection or basic level sensing is needed without complex configuration. Longterm stable operation and easy maintenance lower lifecycle effort. Practical application scenarios Labeling stations: Detect label gaps, count labels, and trigger label stripping or print events on packaging lines. Product positioning: Provide repeatable position detection for stop and start control during labeling or assembly. Level sensing and batch counting: Use as a level sensor or counting device in lowtomedium speed processes where optical detection is appropriate. Compatibility and installation tips Compatible with equipment requiring DC 12 to 24 V supply and NPN or PNP switching signals. Use the colorcoded wires for correct connections: Brown positive, Blue negative, Black NPN, White PNP. For PUD100N, perform the learning routine after mounting and when changing label types to ensure reliable detection. This sensor family provides a practical balance between cost, ease of use, and performance for common industrial labeling, counting, and detection tasks.