Renesas’ humidity sensors offer high accuracy, lowest power with the fastest measurement response time of comparable devices currently on the market.  

The HS300x and HS400X families of relative humidity sensors feature a ±1.5% RH accuracy, both digital and analog outputs covering supply voltages of 1.8V to 5.5V and waterproof IP67 options available. The HS400X offers the lowest power consumption on the market with an average of 1.0µA average (one RH + T measurement per second)

This is especially important for battery-powered applications where lower power consumption equates to longer battery life. In addition to high-accuracy and fast response times, the HS300x and HS400X family features excellent long-term stability of 0.1% RH per year as a result of a robust silicon carbide construction and an innovative design. This improves useful lifetime and lowers effective cost.

Download: Relative Humidity Sensor Family Overview (PDF | English, 日本語)

About Humidity Sensor ICs (RH Sensors)

A humidity sensor IC (also known as an RH sensor or humidity detector) is a device used to measure relative humidity (RH) within a system and digitally report that information back to the system. Several factors influence the quality of a humidity sensor, including accuracy, response time, resolution, and year-over-year drift. Renesas' humidity sensors feature industry-leading specifications, helping to solve product design challenges and giving customers a competitive advantage.

Featured Humidity Sensor Products

Part Number Description Datasheet Order
HS4101 Relative Humidity and Temperature Sensor, Analog Output, ±1.5% RH pdf_icon_for_table.png Buy Now
HS4001 Relative Humidity and Temperature Sensor, Digital Output, ±1.5% RH pdf_icon_for_table.png Buy Now
HS3101 Relative Humidity and Temperature Sensor with Membrane pdf_icon_for_table.png Buy Now
HS3001 High-Performance Relative Humidity and Temperature Sensor pdf_icon_for_table.png Buy Now

Sensor Products

Product Selection Table

    Processing table
    Part Number
    Relative Humidity Accuracy Typ (±%RH)
    Supply Voltage (V)
    Interface
    HS4001
    Relative Humidity and Temperature Sensor, Digital Output, ±1.5% RH    		 1.5 3.3 Digital, I2C
    HS4003
    Relative Humidity and Temperature Sensor, Digital Output, ±2.5% RH    		 2.5 3.3 Digital, I2C
    HS4011
    Relative Humidity and Temperature Sensor with Hydrophobic Membrane, Digital Output, ±1.5% RH    		 1.5 3.3 Digital, I2C
    HS4013
    Relative Humidity and Temperature Sensor with Hydrophobic Membrane, Digital Output, ±2.5% RH    		 2.5 3.3 Digital, I2C
    HS4101
    Relative Humidity and Temperature Sensor, Analog Output, ±1.5% RH    		 1.5 3.3 Analog
    HS4103
    Relative Humidity and Temperature Sensor, Analog Output, ±2.5% RH    		 2.5 3.3 Analog
    HS4111
    Relative Humidity and Temperature Sensor with Hydrophobic Membrane, Analog Output, ±1.5% RH    		 1.5 3.3 Analog
    HS4113
    Relative Humidity and Temperature Sensor with Hydrophobic Membrane, Analog Output, ±2.5% RH    		 2.5 3.3 Analog
    HS3001
    High-Performance Relative Humidity and Temperature Sensor    		 1.5 2.3 - 5.5 I2C
    HS3001-MC1
    Relative Humidity and Temperature Sensor Module, ±1.5% RH Accuracy    		 1.5 3.3 Digital
    HS3001-ML1
    Relative Humidity and Temperature Sensor Module, ±1.5% RH Accuracy    		 1.5 3.3 Digital
    HS3002
    High-Performance Relative Humidity and Temperature Sensor    		 1.8 2.3 - 5.5 I2C
    HS3003
    High-Performance Relative Humidity and Temperature Sensor    		 2.8 2.3 - 5.5 I2C
    HS3003-MC1
    Relative Humidity and Temperature Sensor Module, ±2.5% RH Accuracy    		 2.5 3.3 Digital
    HS3003-ML1
    Relative Humidity and Temperature Sensor Module, ±2.5% RH Accuracy    		 2.5 3.3 Digital
    HS3101
    Relative Humidity and Temperature Sensor with Membrane    		 1.5 3.3 Digital
    HS3101-MC1
    Relative Humidity and Temperature Sensor Module, ±1.5% RH Accuracy    		 1.5 3.3 Digital
    HS3101-ML1
    Relative Humidity and Temperature Sensor Module, ±1.5% RH Accuracy    		 1.5 3.3 Digital
    HS3102
    Relative Humidity and Temperature Sensor with Membrane    		 1.8 3.3 Digital
    HS3103
    Relative Humidity and Temperature Sensor with Membrane    		 2.5 3.3 Digital
    HS3103-MC1
    Relative Humidity and Temperature Sensor Module, ±2.5% RH Accuracy    		 2.5 3.3 Digital
    HS3103-ML1
    Relative Humidity and Temperature Sensor Module, ±2.5% RH Accuracy    		 2.5 3.3 Digital
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    Documentation

    Title Type Date
    Environmental Sensing Solutions
    PDF4.38 MB日本語
    Brochure
    Building Automation Brochure
    PDF19.79 MB日本語
    Brochure
    Relative Humidity Sensor Family Overview
    PDF600 KB日本語
    Overview
    HS4xxx Relative Humidity Sensors Overview

    Learn about Renesas’ HS4XXX family of relative humidity and temperature sensors provide high accuracy, fast measurement response time, and ultra-low power consumption in a small package size, making them ideal for a wide number of applications ranging from portable devices to products designed for harsh environments

    Video List
    HS4xxx Relative Humidity Sensors Overview
    Relative Humidity Sensors (RH Sensors)
    Quick Connect IoT Relative Humidity and Temperature Sensor Software for RA2E1

    News & Blog Posts

    Enabling Good Air Quality in Our Homes with Next Generation Humidity Sensors Blog Post Jun 22, 2022
    Understanding Relative Humidity and Dew Point Blog Post Mar 16, 2018
    Why Does MOx Make the Difference? Blog Post Nov 15, 2017

    Tools & Resources

    Sensor Forum