This is an edge detection sensor from DFRobot. It will help your robot detect the edge of a precipice, preventing it from falling off a table or down the stairs to it's certain demise! This IR distance sensor is connected to an arduino digital pin.

Specifications: 

• Supply Voltage: 2.7~6.2v
• Current: < 10mA
• Detecting Distance: 2~10cm (Low), <2cm or >10cm (High)
• Interface: Digital Output
• Signal Voltage: Vcc-0.6v(High) 0.6v(Low)
• Size: 36.0×10.0×15.0 mm / 1.42×0.39×0.59 in
• Weight: < 5g

Applications:

• Edge detection sensor
• Intelligent Mobile Robotics Platforms
• Home Cleaning Robots

Documents: 

• Product Wiki
• More Documents

Package Includes: 

• 1 x 10cm infrared sensor w/Breakout Board 
• 1 x Digital Sensor Cable for Arduino