IR Emitter and Receiver LED 5mm 940nm
Infrared LEDs are used for remote controls (they're the little LED in the part you point at your TV) and 'night-vision' cameras and these little guys are high powered ones! They are 940nm wavelength, which is what nearly all devices listen to. They're 20 degree beamwidth and work great for any kind of remote control...
TCRT1000 - Reflective Optical Sensor with Transistor Output
The TCRT1000 is a reflective Optical Sensor with straight leads that includes an infrared emitter and phototransistor in a leaded package which blocks visible light.
BP104 - Silicon PIN Photodiode
The BP104 is a Silicon PIN Photodiode with high speed and high radiant sensitivity in miniature, flat, top view plastic package with daylight blocking filter. Filter bandwidth is matched with 900 to 950nm IR emitters.
Sharp GP2Y0A21YK0F Analog Distance Sensor 10-80cm
The GP2Y0A21 Sharp distance sensor is a great way to add obstacle avoidance or motion sensing to your robot or any other project. With a detection range of 10cm to 80cm and an analog voltage indicating the distance, this sensor is very easy to use.
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