Environment

Environmental Sensors for Temperature and Humidity

Digital Temperature Sensor DS18B20 –55°C to +125°C

Code: SEN-10081

DS18B20 1-Wire digital temperature sensor from Maxim IC has a range of –55°C to +125°C. Each sensor is uniquely addressable via a 64bit serial number so lots of sensors can be used on the same bus. Powered from 3v to 5.5V the sensor has up to 12bit resolution at ±0.5°C accuracy.

$4.95

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Humidity and Temperature Sensor - RHT03

Code: SKU-000598

The RHT03 (also known by DHT-22) is a low cost humidity and temperature sensor with a single wire digital interface. The sensor is calibrated and doesn’t require extra components so you can get right to measuring relative humidity and temperature.

$15.95

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MLX90614ESF-AAA Infrared Temperature Sensor 90° FOV

Code: SEN-10027

The Melexis MLX90614ESF-AAA is a high-accuracy, high-resolution, non-contact thermometer with a 90-degree field of view. It has a measurement resolution of 0.02°C and is factory calibrated for a wide -70 to 380°C object temperature range. The sensor uses an SMBus (I²C-compatible) digital interfac...

$27.95

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SparkFun Soil Moisture Sensor with Gold Plated PCB

Code: SEN-10085

Measure the moisture level in soil using the SparkFun Soil Moisture Sensor. The two probes are inserted into dirt, sand or similar materials and the sensor returns an analog voltage signal based on the amount of conductivity due to the water in the soil.

$6.95

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Temperature and Humidity Sensor Module DHT11 0°C to +50°C

Code: SEN-10059

DHT11 digital temperature and humidity sensor features low power consumption, temperature compensation and inbuilt microcontroller for accurate readings. Easy hookup using the included cable.

$12.95

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Was $16.95

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Temperature Sensor - Waterproof (DS18B20)

Code: SKU-000879

This waterproof digital temperature probe with a total length of 6 feet has a temperature range of -55°C to+125°C and uses 1-wire interface for communication.

$15.95

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Temperature Sensor TMP36 −40°C to +125°C Analog Voltage

Code: SEN-10079

The TMP36 is a simple to use temperature sensor with an analog voltage output that varies linearly with the ambient temperature. It reads from −40°C to +125°C and operates at 2.7V - 5.5V DC so is suitable for most microcontrollers or analog circuits.

$2.20

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Thermocouple Type-K - Stainless Steel

Code: SKU-002200

This is a stainless steel, Type-K Thermocouple probe. A thermocouple works by taking two wires made of dissimilar metals, connecting them at the two ends, and making a temperature gradient between one end and the other (a ‘hot’ end and a ‘cold’ one).

$8.95

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Weather Meters

Code: SKU-000284

Whether you’re an agriculturalist, a professional meteorologist or a weather hobbyist, building your own weather station can be a really rewarding project. When you’re measuring weather, however, you need some pretty specialised sensors.

$108.95

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CCS811 CO2 and TVOC Air Quality Sensor

Code: SKU-003928

The CCS811 is a sensor for detecting the level of carbon dioxide (CO2) and Total Volatile Organic Compounds (TVOCs) in the air. TVOC combined with CO2 is used to measure indoor air quality or IAQ.

$86.95

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