Adopting new specialized IC, its performance more stable  Reverse polarity protection, Short circuit protection(DC type)  Long endurance and high-reliability Power supply indicator: Green LED, Operating indicator: Red LED  CE approved Specification: Model: CDD-11N/P Mounting: Diffused type Sensing distance: 11cm Supply voltage: 10-30vdc Output: NPN/ PNP Repeated accuracy: <3% Detecting Object: Transparent and opaque object Frequency 10-55Hz Light source: IR LED Ambient temperature -25~+55C Protection degree IP67 Shell material: Metal Made by china Packages Include: 1 x Adjustable Photocell Switch CDD-11N Diffuse NPN Parking Photoelectric Sensor