Sick KTM-WN11181P Contrast Sensor NPN 12.5 mm 15 kHz IP67

Industrial contrast sensor

The Sick KTM-WN11181P is a rectangular contrast sensor with an RGB LED light source emitting at 470 nm, 525 nm and 625 nm. It detects marks at a 12.5 mm sensing distance with a ± 3 mm tolerance. The 1.5 mm x 6.5 mm vertical light spot suits precise registration tasks on packaging or print lines.

Sensing capacity and limits

A 15 kHz switching frequency and 32 µs response time handle high-speed web or conveyor applications. NPN light/dark switching supports 50 mA output current. Teach-in via button or dynamic ET input stores settings in non-volatile memory with a 28 ms retention time. Operation stops beyond the 12.5 mm range or if supply voltage falls outside 12 V DC to 24 V DC.

Upgrade context

This unit replaces older contrast sensors that lack RGB discrimination or teach-in flexibility. The jump is worthwhile when an application needs multi-wavelength detection at 15 kHz in a compact ABS housing rated IP67. It is not for buyers who require analogue output, longer sensing distances or PNP switching logic.