Infrared proximity sensor made by Sharp.
Features:
Measurement range: 4cm to 30cm
The maximum allowable Angle : > 40 °
The power supply voltage : 4.5 to 5.5 V
The average power consumption : 35 mA
Peak power consumption : about 200 mA
The frequency of updates/cycle : 25 Hz/40 ms
Analog output noise : < 200 mV