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The DHT22 is a step up from the older DHT11 and has some improved features. Learn More

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 output that is linearly proportional to the Celsius temperature. It also doesn’t require any external calibration to provide typical accuracies of ±1°C at +25°C and ±2°C over the −40°C to +125°C temperature range. We like it because it’s so easy to use: Just give the device a ground and 2.7 to 5.5 VDC and read the voltage on the Vout pin. The output voltage can be converted to temperature easily using the scale factor of 10 mV/°C. Learn More

Linear analogue output Temperature Sensor. Learn More

10K thermistor with a negative temperature coefficient. Good choice for temp-sensing aplications. Learn More

Need to measure something damp? This epoxy-coated precision 1% 10K thermistor is an inexpensive way to measure temperature in weather or liquids. The resistance .. read more Learn More

This I2C digital temperature sensor is one of the more accurate/precise Adafruit have ever seen, with a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range .. read more Learn More

This is a waterproofed version of the DS18B20 Temperature sensor. Handy for when you need to measure something far away, or in wet conditions. Learn More

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 .. read more Learn More

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 .. read more Learn More

Thermocouples are best used for measuring temperatures that can go above 100 °C. This is a bare wires bead-probe which can measure air or surface temperatures. Most .. read more Learn More

Finally Adafruit have an I2C-interface temperature & humidity sensor in a nice enclosed style. This sensor contains a DS18B20 temperature sensor and a capacitive humidity .. read more Learn More

Unlike all the other temperature sensors Adafruit have, this breakout has a really cool IR sensor from TI that can measure the temperature of an object without touching .. read more Learn More

The Si7021 is a low-cost, easy-to-use, highly accurate, digital humidity and temperature sensor. This sensor is ideal for environmental sensing and data logging and perfect for build a weather stations or humidor control system. All you need are two lines for I2C communication, and you’ll have relative humidity readings and very accurate temperature readings as a bonus! Learn More

Wide range, low power temperature sensor outputs an analog voltage that is proportional to the ambient temperature. To use, connect pin 1 (left) to power (between .. read more Learn More

Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity! This sensor is great for .. read more Learn More

Are you still looking for a low cost thermometer? Did you get one? Aha! Here it is! This is a new waterproof digital thermometer with display. It is suitable for greenhouse, fish tank, swimming pool and other application scenarios which require temperature measurement. It is completely waterproof to a depth of one meter for long time. And it can continuously work for half the year with only 2 AG13 button cell. Learn More

Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference, as well as calculations to handle any non-linearities. For a long .. read more Learn More

For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes .. read more Learn More

For precision temperature sensing, nothing beats a Platinum RTD. Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes .. read more Learn More