Overview
The Seeka GR02S is a versatile photoelectric sensor designed for industrial automation and motion control applications. The GR02S is a photoelectric sensor that detects objects based on reflected light without the need for an external reflector. This diffuse reflection design simplifies installation and eliminates the complexity of separate reflector setup.
Key Features
- Does not require a separate reflector
- Light-on/dark-on selectable operation
- IP67 enclosure protection for dusty or moisture-rich environments
- NPN open collector output
- Particularly well-suited for short-range detection in automation and applications where dust, moisture, or mechanical stress in the environment require IP67-level protection
Technical Specifications
- Sensor Type: Photoelectric Diffuse Reflection
- Operating Voltage: 12–24 V DC
- Sensing Range: 20 cm
- Output Type: NPN open collector
- Operating Temperature: -25 to 55°C
- Output Configuration: Light on/dark on selectable
- Protection Rating: IP67
Typical Applications
- Object detection in conveyor systems and material handling
- Packaging and labeling machinery automation
- Part counting and sorting operations
- Machine tool positioning and safety interlock systems
- Industrial environments with high dust, moisture, or vibration
Compatibility & Replacements
Compatible With
- Standard PLC and logic controller systems with 12–24VDC input capability
- Industrial automation control panels and relay modules
- Any system supporting NPN open collector sensor inputs
- DC power supplies rated for 12–24VDC at appropriate amperage
Replaces / Drop-In Replacement For
- Seeka/Takex GR02-S (alternate part designation)
- Seeka/Takex GR02SPN (PNP variant requires output reconfiguration)
Works With
- Programmable Logic Controllers (PLCs) with NPN sensor input modules
- Industrial relay logic and discrete I/O systems
- 24VDC control systems commonly found in manufacturing automation
- Safety interlocks and emergency stop circuits
















