Features Scratch-resistant ABS plastic shell: Protects the switch from damage and ensures long-lasting durability. U-shaped groove design: Enables easy and efficient object detection, enhancing overall operational convenience. High and responsiveness: Provides accurate and reliable sensing, ensu consistent and effective performance. NPN normally open output mode: Offers versatile compatibility with a wide range of applications and a DC10-30V power supply voltage. Stable and reliable performance: Made of high-quality electronic components, ensu consistent and dependable operation. Specification: Item Type: Photoelectric Switch Brand: BERM？ Model: E3S-GS30E4 Power Supply Voltage: DC10-30V Output Mode: NPN Normally Open Detection Distance: 30mm Rated Current: 200mA Switching Frequency: between300Hz Insulation Resistance: >200MΩ Housing Material: ABS Plastic Detection Method: Trough Type / U Type Structure Type: Amplifier Built-In Type Application: Inductive Objects Package List: 1 x Photoelectric Switch Package List 1 x Photoelectric Sensor Switch