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166-ADA Round Force-Sensitive Resistor (FSR) - Interlink 402
166-ADA Round Force-Sensitive Resistor (FSR) - Interlink 402
US$10.78
FSRs are sensors that allow you to detect physical pressure, squeezing and weight. They are simple to use and low cost. This sensor is a Interlink model 402 FSR with 1/2 diameter sensing region.
Delivery within 2-3 weeks
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270-ADA Thermocouple Type-K Glass Braid Insulated - K
270-ADA Thermocouple Type-K Glass Braid Insulated - K
US$15.33
Features: K type thermocouple with glass over-braiding. Good up to 500 °C (900 °F)! Color-coded wires. 1 meter long (a little more than 3 feet). Best used with a thermocouple amplifier such as the MAX6675 or MAX31855. 
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374-ADA DS18B20 Digital temperature sensor + extras
374-ADA DS18B20 Digital temperature sensor + extras
US$7.00
These 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter.
Delivery within 2-3 weeks
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464-ADA 12" eTape Liquid Level Sensor + extras
464-ADA 12" eTape Liquid Level Sensor + extras
US$75.17
The eTape Liquid Level Sensor is a solid-state sensor with a resistive output that varies with the level of the fluid. It does away with clunky mechanical floats, and easily interfaces with electronic control systems. The eTape sensor's envelope is compressed by the hydrostatic pressure of the fluid in which it is immersed.
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ADXL345 - Triple-Axis Accelerometer (+-2g/4g/8g/16g) w/ I2C/SPI
US$26.95
Filling out our accelerometer offerings, we now have the really lovely digital ADXL345 from Analog Devices, a triple-axis accelerometer with digital I2C and SPI interface breakout. We added an on-board 3.3V regulator and logic-level shifting circuitry, making it a perfect choice for interfacing with any 3V or 5V microcontroller such as the Arduino.
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915-ADA Waterproof Metal On/Off Switch with Blue LED Ring - 16mm Blue On/Off
915-ADA Waterproof Metal On/Off Switch with Blue LED Ring - 16mm Blue On/Off
US$10.42
This button is an on/off switch button, when you press it the 'normally-open' contact shorts to the common contact and the button stays 'pressed'. When you press it a second time, the button springs open, and the contacts open up again. 
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161-ADA Photo cell (CdS photoresistor)
161-ADA Photo cell (CdS photoresistor)
US$1.75
CdS cells are little light sensors. As the squiggly face is exposed to more light, the resistance goes down. When its light, the resistance is about 5-10KΩ, when dark it goes up to 200KΩ.
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560-ADA Waterproof Metal Pushbutton with Green LED Ring - 16mm Green Momentary
560-ADA Waterproof Metal Pushbutton with Green LED Ring - 16mm Green Momentary
US$10.42
This button is a momentary push button, when you press it the 'normally-open' contact shorts to the common contact. When you release it, the contacts open up again. The switch and LED are separated, so you could wire it to turn on when pressed or vice versa or whatever you wish!
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1092-ADA Tactile On/Off Switch with Leads
1092-ADA Tactile On/Off Switch with Leads
US$6.09
Squeeze once to turn on, squeeze again to turn off! This clicky switch makes a great power switch or mode toggler. We like this switch because it's easy to embed in a seam for easily powering up/off wearable and fabric projects. Can handle up to 14V and 2 Amps! This is a really satisfying switch.
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917-ADA Waterproof Metal On/Off Switch with White LED Ring - 16mm White On/Off
917-ADA Waterproof Metal On/Off Switch with White LED Ring - 16mm White On/Off
US$10.42
These chrome-plated metal buttons are rugged and waterproof and look real good while doing it! Simply drill a 16mm hole into any material up to 1/2" thick and you can fit these in place, there's even a rubber gasket to keep any water out of the enclosure.
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Touch screen (Nintendo DSL digitizer)
US$9.49
This resistive touch screen can be used with a stylus or fingertip and is easy to use with a microcontroller. You can put it over a paper overlay for a touch control panel or attach it to an LCD to DIY a touch-activated display.
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916-ADA Waterproof Metal On/Off Switch with Red LED Ring - 16mm Red On/Off
916-ADA Waterproof Metal On/Off Switch with Red LED Ring - 16mm Red On/Off
US$10.42
This button is an on/off switch button, when you press it the 'normally-open' contact shorts to the common contact and the button stays 'pressed'. When you press it a second time, the button springs open, and the contacts open up again. 
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820-ADA Micro Switch w/Wire - Three Terminals
820-ADA Micro Switch w/Wire - Three Terminals
US$5.17
This microswitch has a 3" long wire lever actuator and three terminals. Sometimes called 'coin switches' - they're used in coin detectors. The terminals are along the bottom (the other microswitches have them on the sides).
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819-ADA Micro Switch w/Roller Lever - Three Terminal
819-ADA Micro Switch w/Roller Lever - Three Terminal
US$3.76
This microswitch has a flat metal lever actuator and a roller at the end. The roller makes it a little better for angled actuation. This switch comes with three terminals (common/normally-open/normally-closed). We also have kinds with a bump actuator, flat lever and long wire.
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1152-ADA Arcade/Button Quick-Connect Wire Pair - Set of 10 pairs
1152-ADA Arcade/Button Quick-Connect Wire Pair - Set of 10 pairs
US$9.54
Quick connector wire sets will make wiring up our arcade-style or metal waterproof buttons quicky-quick. Each wire comes as a 'pair' with two 0.11" quick-connects pre-crimped onto 20cm long wires.
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