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!
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 .
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%...
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...
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...
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.
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...
Sensor / probe for measuring soil moisture - analog - Iduino ME110
The sensor to determine the moisture level of the soil. It is powered with the voltage from 3.3 V to 5 V. The output is the analog voltage which increases its value with...
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...
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...
Temperature and humidity sensor AM2320 - I2C
Temperature and humidity sensor, similar to the popular DHT11 or DHT 22, with digital single-wire I2C interface. Measuring range: temperature from -40 °C to +80 °C, humidity...
Temperature sensor and humidity ZigBee ZTH1 Thuja Smart Life
Small size ZigBee ZTH1 humidity temperature sensor, available in white . It is powered by one 3 V CR2450 battery (supplied). It works with ZigBee 3.0. It measures...
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...
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.
BleBox humiditySensor v2 - WiFi temperature and humidity sensor
BleBox humiditySensor v2 is a small sensor that communicates via a local WiFi network, allowing you to measure relative humidity and air temperature . Thanks to the wBox...
Soil moisture sensor with 12V relay - HC-13
The sensor to determine the moisture level of the soil. When it exceeds the level set by the potentiometer, the LED lights up and switched are the contacts oc the relay. The...
Grove - sensor / probe for measuring soil moisture v1.4 - analog
The sensor allows you to determine the moisture level of the soil. It is supplied with the voltage from 3.3 V to 5 V. The output has analog voltage, which increases its value...
Water Level Sensor Module - Iduino SE045
The sensor is used for determining liquid level in the vessel. It is powered by a voltage of 5.0 V. The output is an analog voltage which increases its value along the depth...
Temperature and humidity sensor - Sensirion SHT40 - STEMMA AT/Qwiic - Adafruit 4885
Temperature and humidity sensor from Adafruit. Equipped with Sensirion SHT40 chip and STEMMA QT / Qwiic connectors, which facilitate the connection of the sensor with...
Temperature and humidity sensor DHT22 (AM2302) - module + cables
Module with temperature and humidity sensor with a digital interface, single-wired. Measuring range: temperature -40 to +80 °C, humidity 0-100% RH.
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...
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...
Sensor / probe to measure soil moisture - analog - Waveshare 9527
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 which increases its value along with...See also
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.
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.
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.
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.
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.
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).
