In the world of robotics and automation, you will meet thousands of different sensors. Some measure motion, some measure temperature, and some more complicated values. Among the most practical sensors are the humidity sensors. You can use them for really different projects!
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Ampgenol FCI Clincher connector - female 3x - SparkFun COM-14196
Index: SPF-09141
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24V Step-Up/Step-Down Voltage Regulator S18V20F24 - Pololu 2582
Index: PLL-14070
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SenseCAP S2106 - water pH sensor - LoRaWAN - Seeedstudio 101070001
Index: SEE-22928
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Humidity sensors
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Temperature and humidity sensor DHT11 + 50C
Popular temperature and humidity sensor with a digital, single wired interface. Measurement range: temperature 0°C to +50 °C, humidity 20% to 90% RH .
Index: UCC-09301
Index: UCC-09301
The sensor to determine the moisture level of the soil. It is powered with the voltage from 3.3 V to 5 V. It has digital and analog output, making it compatible with most of...
Index: MOD-01588
Index: MOD-01588
Temperature and humidity sensor DHT11 - module + wires
Module with temperature and humidity sensor with a digital interface. Measuring range: temperature 0-50 °C, humidity of 20-90 %RH . It has connectors for connecting the sensor...
Index: MOD-01886
Index: MOD-01886
BME280 - humidity, temperature and pressure sensor 110 kPa I2C / SPI - 3.3V - soldered connectors
Very easy to use temperature, humidity and pressure sensor. The module is powered by 3.3 V and can also communicate via I2C or SPI interface . Sensors of this type are...
Index: ZES-16534
Index: ZES-16534
SHT-30 Mesh-protected Weather-proof Temperature/Humidity Sensor - 1m - Adafruit 4099
Temperature and humidity sensor equipped with a weatherproof metal mesh and a 1 m long cable. The measuring range for temperature is from -40 °C to 125 °C, for humidity from 0...
Index: ADA-14969
Index: ADA-14969
Humidity Sensor SYH-2R - no case
Analog air humidity sensor changes the resistance depending on the humidity level. It operates in the range from 10 % to 95 % RH. The module has no case.
Index: MOD-08089
Index: MOD-08089
SHT31 - digital humidity and temperature sensor I2C - Adafruit 2857
Humidity and temperature sensor powered by the voltage from 3 V to 5.0 V with I2C interface. The measurement of temperature is from -40 °C to 125 °C, humidity from 0 to 100 % RH.
Index: ADA-05415
Index: ADA-05415
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Temperature and humidity sensor DHT11 - blue module
Module with temperature and humidity sensor with a digital interface. Measuring range: temperature 0-50 °C, humidity of 20-90 %RH. It has connectors for connecting the sensor...
Index: MOD-03030
Index: MOD-03030
Maker Soil Moisture - capacitive soil moisture sensor
Cytron Maker Soil Moisture sensor is a sensor that can measure soil water content and connect with various microcontrollers. The sensor has an analog output in the form of a...
Index: CTN-21207
Index: CTN-21207
BME280 - humidity, temperature and pressure sensor 110 kPa I2C / SPI - 3.3V
Humidity, temperature and pressure sensor powered with the voltage of 3.3 V with I2C and SPI interface. Measuring range: temperature: -40 °C to 85 °C, humidity: 10% RH to 100%...
Index: DNG-11803
Index: DNG-11803
DFRobot Gravity - analog soil moisture sensor - corrosion resistant - SEN0193
The device is used to measure soil moisture by the capacitive detection. It has a built-in voltage regulator which provides an operating voltage range from 3.3 V to 5 V. It is...
Index: DFR-10305
Index: DFR-10305
Temperature and humidity sensor DHT21 (AM2301) in case
Temperature and humidity sensor with a digital, single-wired interface. Measuring range: temperature -40 to 80 °C, humidity 0 to 100 % RH . Powered with voltage in the range...
Index: MOD-01884
Index: MOD-01884
CJMCU SHT10 - digital temperature and humidity sensor
Humidity and temperature sensor powered with the voltage of 3.3 V. Temperature measurement range is from -40 °C to + 123,8 °C, for the humidity is from 0 to 100 % RH.
Index: MOD-09424
Index: MOD-09424
Temperature and humidity sensor DHT22 (AM2302)
Popular temperature and humidity sensor with digital interface, jednoprzewodowym . Measuring range: temperature from -40 to 80 °C, humidity 0-100% RH.
Index: UCC-01612
Index: UCC-01612
Fermion - AHT20 temperature and humidity sensor - DFRobot SEN0527
The Fermion series tile is equipped with the AHT20 system, which allows for precise measurements of air temperature and humidity . The module uses the I2C bus and the...
Index: DFR-21922
Index: DFR-21922
Gravity - Analog Waterproof Capacitive Soil Moisture Sensor V2.0 - DFRobot SEN0308
The device is designed to measure soil moisture by means of capacitive detection. DFRobot product has increased water resistance . It can be placed in the soil for a long...
Index: DFR-17377
Index: DFR-17377
Pino-Tech SoilWatch 10 - analog soil moisture sensor resistant to corrosion - 5m
The sensor to determine the moisture level of the soil. It is powered with the voltage from 3.1 V to 5 V. The output is the analog voltage. The design of the sensor has no...
Index: PNT-12730
Index: PNT-12730
Digital temperature and humidity sensor - SHT45 - STEMMA QT / Qwiic - Adafruit 5665
High precision , digital temperature and humidity sensor manufactured by Adafruit . It has a built-in Sensirion SHT45 system that measures temperature in the range...
Index: ADA-22541
Index: ADA-22541
Grove AHT20 - temperature and humidity sensor - I2C - - Seeedstudio 101990644
The Grove AHT20 is a new generation sensor, enabling even more accurate measurements. The AHT20 has a newly designed ASIC with an improved MEMS semiconductor moisture...
Index: SEE-16595
Index: SEE-16595
Temperature and humidity sensor DHT11 - module Iduino SE052
Module with temperature and humidity sensor with a digital interface. Measuring range: temperature 0-50 °C, humidity of 20-90 %RH. It has connectors for connecting the sensor...
Index: WSR-04918
Index: WSR-04918
Pino-Tech SoilWatch 10 - analog soil moisture sensor corrosion resistant - 10m
The sensor is used to determine the level of soil moisture . It is powered with a voltage from 3,1V to 5V . The output is an analogue voltage. There are no visible electrodes...
Index: PNT-12731
Index: PNT-12731
BME - humidity, temperature and pressure sensor I2C/SPI - 3,3V/5V - Waveshare 15231
Humidity, temperature and pressure sensor powered with the voltage of 3.3 V or 5 V with I2C and SPI interface. Measuring range: temperature: -40 °C to 85 °C, humidity: 0 %RH...
Index: WSR-13463
Index: WSR-13463
Index: KTR-18886
The sensor is used to detect precipitation. It is powered with the voltage of 5 V. It has digital and analog output, making it compatible with most of the commissioning...
Index: MOD-01732
Index: MOD-01732
See also
- RPM sensors
- Oxygen sensors
- Tilt sensors
- Accelerometers
- Inductive sensors
- Hall effect sensors
- Led motion detectors
- Optical sensors
- Twilight sensors
- Resistance sensors
- Door sensors
- Piezoelectric sensors
- Alarm sensors
- 9DoF IMU sensors
- Pressure sensors
- Air quality sensors
- Sound sensors
- Gesture sensors
- Gas sensors
- Limit switches
- Sensors of light and color
- Magnetic sensors
- Medical sensors
- Pressure sensors
- Sensors odbiciowe
- Distance sensors
- Inductive contactless sensors
- Weather sensors
- Liquid level sensors
- Current sensors
- Flow sensors
- Motion sensors
- Temperature sensors
- PT100 temperature probes
- Fingerprint readers
- Encoders
- Photoresistors
- Phototransistors
- IR receivers
- Magnetometers
- Gyros
- Sensor sets
- Grove modules
- Gravity modules
Humidity sensor Check the air humidity level
An important boundary
Humidity is the water vapor content in the air, and the optimal humidity level in living rooms is between 30 and 65%. We feel best in rooms with humidity between 40 and 60%. However, the minimum value should not be lower than 30% and this is specified in the Polish standard PN-78/B-03421. Winter periods can cause the temperature to drop below this value - this is because when there is frost, the level of water vapor in the air is very low. We should have humidity sensors at home to constantly monitor its level.
Below the border
In winter and very hot seasons, during dry days, the humidity level may drop below the threshold of 30%. Humidity sensors available in this category will help you measure this. When the level is very low and the air is too dry, we experience a feeling of dryness in the throat and nose, sometimes scratching, and even breathing problems. Wooden furniture and floors may shrink excessively, which may result in the appearance of gaps. The air should then be saturated with water vapor, e.g. by placing a damp towel on the radiator.
Above the border
Humidity sensors available in our offer can measure humidity levels from 0 to 100%. In addition, they are often equipped with additional meters, e.g. temperature, pressure or gas. During a warm summer, during a stormy period, the humidity can be as high as 80-90% - these are extremely high values that make us feel cold and give us a headache, and also increases the risk of upper respiratory tract diseases. The adverse impact on health is not the only symptom - laundry or washed floors do not dry at such high values. The walls may become damp and dew may appear on the windows. Excessive humidity should be combated, e.g. by using air dehumidifiers.
Stay level
Maintaining the correct level of humidity in the rooms we stay in is extremely important. Humidity sensors available in our offer will help us in this task and accurately indicate the level of water vapor in the air. If it is too low, we should open the windows often and ventilate the room - this will also help if the level is too high. Fresh air improves the comfort of staying in such a place. In winter, use a wet towel placed on the radiator, but the best solution is to buy an air humidifier, necessarily with a hygrostat. This condition will be checked regularly by a humidity sensor.
Correct humidity level
When humidity sensors indicate that the level is too high and this effect has persisted for a long time, first locate the reason for this state of affairs, e.g. leaking pipe, damp foundations, leaking thermal insulation of walls or corners, and then counteract this, which will speed up the drying process. Air dehumidifiers, moisture absorbers or an air conditioner that removes water vapor from the room during operation and maintains it at the correct level will effectively cope with this task.
Humidity sensors - FAQ
For simple measurements of air humidity and temperature (e.g. in a smart home system), inexpensive analog sensors from the DHT11 series will be perfect. More advanced applications (e.g. precise weather stations) use digital sensors, often enabling the measurement of other quantities (e.g. pressure).