The slot photoelectric sensors of the SR21 series, with 2mm slot width, are characterized by a high 12 bit (4096 steps) resolution, a low 20µs response time and a switching frequency reaching 25kHz. The setting of the switching threshold is carried-out automatically by simply pressing a push-button, or dynamically during label (or other reference) movement. The SR21-IR model with infrared emission is ideal for label or hole detection on continuous surfaces, while the SR21-RG model with double red or green emission suits color print register mark detection on transparent films for automatic packaging.

• Teach-in setting: easy and fast setting procedure
• Dynamic setting: possibility to set the sensor while the labels film is moving
• 12 bit resolution: high detection reliability for a precise reading
• 25KHz switching frequency: high detection repeatability
• Red/Green emission model: possibility to perform contrast application

• Packaging lines
• Labeling machines
• Paper and Printing machines