This is a small device called a reed switch. When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull together and the switch closes. When t..
This is a small device called a reed switchhttp://en.wikipedia.org/wiki/Reed_switch. When the device is exposed to a magnetic field, the two ferrous materials inside the switch pul..
This is a small force sensitive resistor. It has a 0.16" (4 mm) diameter active sensing area. This FSR from Interlink Electronics will vary its resistance depending on how much pr..
This is a very small light sensor. A photocell changes (also called a photodetector) resistance depending on the amount of light it is exposed to. These little sensors make great a..
The TSL235R light-to-frequency converter outputs a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance). The device has been temperatur..
This type of photoresistor is made of environment-friendly materials(no Cadmium and Lead) compared with the traditional CDS photoresistor.
It changes resistance depending on the..
10K thermistor with a negative temperature coefficient. Good choice for temp-sensing applications.
You get only one thermistor.
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.
This is the same temperature sensor that is included in our SparkFun Inventor's Kit. The TMP36 is a low voltage, precision centigrade temperature sensor. It provides a voltage outp..
Photosensitive resistance is the resistance of a semiconductor material, the conductivity change with light intensity varies.
The use of this feature will work made of different..
The US1881 is an integrated Hall effect latched sensor. That's nice but what does it do? Holding a magnet near the sensor will cause the output pin to toggle. This makes for a robu..