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Humidity and Temperature Sensor - DHT20
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Price: $10.00
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Sparkfun Item #: SEN-18364 -

The DHT20 is a low cost humidity and temperature sensor with a I2C digital output protocol. It can be applied to HVAC, dehumidifier, automatic control, data loggers, weather stations, and many other projects. The sensor is calibrated and doesn't require extra components so you can get right to measuring relative humidity and temperature. Features: Supply Voltage: 2.2-5.5V Communication: Standard I2C Protocol Humidity from 0-100% RH Typical accuracy: RH: ±3%, T: ±0.5℃ -40 - 80 degrees C...

Platinum RTD Sensor - PT100
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Price: $32.39
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Sparkfun Item #: SEN-17059 -

A PT100 is a Platinum RTD (Resistance Temperature Detector) with a resistance of 100Ω at 0°C which changes with temperature. It is suitable for applications in the temperature range of -200°C to 600°C but are more commonly used in the range -50°C to +250°C. To use this sensor with our Qwiic PT100 ADC please connect the red wires to terminals 3 & 4. Connect the white wire to terminal 2. Short the A and B pads on the back of the Qwiic PT100 PCB. Be sure to use Example4-3-Wire from within the...

Temperature Sensor - High Temperature, Waterproof (DS18B20)
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Price: $18.42
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Sparkfun Item #: SEN-18367 -

This sealed digital temperature probe lets you precisely measure temperatures in wet environments with a simple 1-Wire interface. The DS18B20 provides 9 to 12-bit (configurable) temperature readings over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source. Because each DS18B20 contains a...