Description:
The 1146 IR Reflective Sensor uses an infra-red LED and a phototransistor to measure the distance of an object between 1mm and 4mm away. This sensor can also detect the presence of an object up to 9mm away, but it won't be able to reliably measure the distance.

This sensor works best with objects with smooth, opaque surfaces. This sensor connects to any device with an Analog Input, that works on 5V DC.

Specifications:

• Sensor Type: Distance (Infrared)
• Sensor Output Type: Ratiometric
• Measurement Distance Min: 1.5 mm
• Measurement Distance Max: 4 mm
• Detecting Distance Min: 200 μm
• Detecting Distance Max: 9 mm
• Supply Voltage Min/Max: 4.8 / 5.3 V DC
• Current Consumption Max: 50 mA
• A 60 cm Sensor cable (3002) is included

Resources:
User Guide for sensor 1146