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Adafruit Industries LLC
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Supplier: Adafruit Industries LLC
Subtitle:
161 - Photo Cell (CdS Photoresistor)
Description:
CdS cells are little light sensors. If the 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. To use, connect one side of the photo cell (either one, its symmetric) to power (for example 5V) and the other side to...
Category: Sensors - Optical - Photo Detectors - CdS Photoconductive Cells (Ambient Light) |
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Supplier: Adafruit Industries LLC
Subtitle:
2168 - IR Break Beam Sensor - 5mm LEDs
Description:
Infrared (IR) break-beam sensors are a simple way to detect motion. They work by having an emitter side that sends out a beam of human-invisible IR light, then a receiver across the way which is sensitive to that same light. When something passes between the two, and it’s not transparent to IR, t...
Category: Sensors - Optical - Photoelectric, Industrial |
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Supplier: Adafruit Industries LLC
Subtitle:
372 - 10K Precision Epoxy Thermistor - 3950 NTC
Description:
This epoxy-coated precision 1% 10K thermistor is an inexpensive way to measure temperature in weather or liquids. The resistance in 25°C is 10K (+- 1%). The resistance goes down as it gets warmer and goes up as it gets cooler. These are often used for air conditioners, water lines, and other plac...
Category: Sensors - Temperature - Thermistors NTC (Negative Temperature Coefficient) |
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Supplier: Adafruit Industries LLC
Subtitle:
High Temp Waterproof DS18B20 Digital Temperature Sensor 3m Long
Description:
This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Handy for when you need to measure something far away, or in wet conditions. This sensor is a little more expensive than the other waterproof version it has a PVC cable because this one can be used up ...
Category: Sensors - Temperature - Temperature - Analog and Digital Output |
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Supplier: Adafruit Industries LLC
Subtitle:
642 - High Temp Waterproof DS18B20 Digital Temperature Sensor
Description:
This is a pre-wired and waterproofed version of the DS18B20 sensor made with a PTFE wire cable. Handy for when you need to measure something far away, or in wet conditions. Because the sensor signal is digital, you don't get any signal degradation even over long distances. These 1-wire digital te...
Category: Sensors - Temperature - Thermocouple, Temperature Probes |
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Supplier: Adafruit Industries LLC
Subtitle:
Waterproof DS18B20 Digital Temperature Sensor plus Extras
Description:
This is a pre-wired and waterproofed version of the DS18B20 sensor. For when you need to measure something far away, or in wet conditions. While the sensor is good up to 125°C, the cable is jacketed in PVC, keeping it under 100°C. Because they are digital, you do not get any signal degradation ev...
Category: Sensors - Temperature - Thermocouple, Temperature Probes |
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Supplier: Adafruit Industries LLC
Subtitle:
3290 - Platinum RTD Sensor PT100 - 3-Wire 1 Meter Long
Description:
For precision temperature sensing, a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor. In this sensor, the resistor is a small strip of Platinum with a res...
Category: Sensors - Temperature - Resistance Temperature Detectors (RTD) |
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Supplier: Adafruit Industries LLC
Subtitle:
1766, 1767 and 2384 - Vibration Sensor Switches
Description:
These spring-vibration switches are sensitivity non-directional vibration induced trigger switches. Inside is a very soft spring coiled around a long metal pin. When the switch is moved, the spring touches the center pole to make contact. So, when there's motion, the two pins will act like a clos...
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Supplier: Adafruit Industries LLC
Subtitle:
375 - Magnetic Contact Switch (Door Sensor)
Description:
This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet. When the magnet is less than 13mm (0.5") away, the reed switch closes. They're often used to detect when a door or drawer is op...
Category: Sensors - Magnetic - Position, Proximity Speed Modules |
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Supplier: Adafruit Industries LLC
Subtitle:
PIR Motion Sensor
Description:
PIR sensors are used to detect motion from pets/humanoids from about 20 feet away. This one has an adjustable delay before firing (approx. 2-4 seconds), adjustable sensitivity and include is a 1 foot (30 cm) cable with a socket so you can easily reposition the sensor or mount it using the two dri...
Category: Sensors - Area - Motion Sensors, Detectors (PIR) |
