HR202 Resistive Humidity Sensor Probe (with housing)

Description

HR202 Resistive Humidity Sensor Probe (with housing)

Overview

The HR202 is a new type of humidity-sensitive resistor made from organic macromolecular materials, which can be used in places such as: hospitals, warehouses, workshops, textile industry, tobacco, pharmaceutical field, meteorology, etc.

Features

Excellent linearity
Low power consumption
Wide measurement range
Fast response, anti-interference, high stability, high performance-to-price ratio
Technical specification

Operating range: humidity (20-95% RH) temperature (0-60 degrees)
Power supply: 1.5 V AC (max sine)
Operating frequency: 500Hz-2kHz
Estimated power: 0.2mW (max sine)
Central value: 31k or 23k (at 25Celsius, 1kHz, 1V AC, 60% RH)
Impedance range: 19.8-50.2 k (at 25 degrees)
Accuracy: 5% RH
Dimensions: with housing 12 * 15 * 5mm, without housing 8 * 10 * 0.7mm

We have datasheets available for all components. If it’s not present in the product download card, send us a message through the contact us form and we will publish it as soon as possible on our website.

Tutorial: How to Use HR202 Resistive Humidity Sensor

The HR202 sensor measures air humidity. Perfect for environmental monitoring projects.

What you need

• Arduino Uno
• USB Cable
• HR202 Sensor

Steps

1. Connect the HR202 to an analog pin on the Arduino.
2. Download the Adafruit DHT library and install it in the Arduino IDE.
3. Set the sensor pins in the code.
4. Upload the sketch to your Arduino.
5. Obtain and display humidity data.

Example code

void setup() { Serial.begin(9600); } void loop() { float humidity = getHumidity(); Serial.println(humidity); }

Mini project

Create an excessive humidity alarm system.

Common mistakes

• Incorrect analog pin.
• Library not installed correctly.
• Incorrect sensor configuration.

Recommended accessories

• Arduino Uno
• 0.96” I2C OLED Display
• Buzzer

Frequently asked questions

How do you calibrate the HR202 sensor?
Check the datasheet for specific calibration instructions.

Does the sensor work in extreme humidity conditions?
Check the datasheet for the sensor’s operating range.