Overview
The Sick WTR 2-N551S06P03 photoelectric sensor is a precision diffuse sensor designed for integration with ZPA (Zone Pick Algorithm) control systems and ZoneControl accumulation conveyors. This sensor offers reliable object detection with multiple output configurations to meet diverse automation requirements.
Key Features
- Adjustable Background Suppression (ABS): Ignores background targets and no reflector is required
- Multiple Output Options: PNP, NPN, light and dark configurations
- Under-Conveyor Mount Design: Stand alone sensor easily integrated with ZPA systems
- M12 Connector: Industrial grade M12 cable connection
- Precision object detection for material handling automation
Technical Specifications
The WTR 2-N551S06P03 is part of the ZoneControl SICK family of ZPA control solutions designed for accumulation conveyors. The sensor features diffuse sensing technology with electronic background suppression, eliminating the need for reflective targets.
Typical Applications
- Accumulation conveyor systems
- Object detection and position sensing
- Part present/absent detection
- Material handling automation
- Conveyor belt monitoring and control
Compatibility & Replacements
Compatible With
- Integrated ZPA systems designed for accumulation conveyors
- ZoneControl conveyor control systems
- Industrial automation platforms with M12 connectors
- PLC and motion control systems supporting PNP/NPN inputs
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering specific replacement applications. The WTR 2-N551S06P03 maintains the same form factor and electrical characteristics as other WTR2 series variants.
Works With
- Sick ZPA (Zone Pick Algorithm) control systems
- PLC input modules with 24 VDC PNP/NPN capability
- Conveyor management software and controllers
- M12 connector infrastructure


















