The HS4003 is a highly accurate, ultra-low power, fully calibrated relative humidity and temperature sensor. The MEMS sensor features a proprietary sensor-level protection ensuring high reliability and long-term stability. The HS4003 is fully calibrated and temperature compensated with an I2C digital output.


  • Humidity range: 0% to 100%RH
  • RH accuracy: ±2.5%RH, typical 
  • I2C digital output
  • 14-bit resolution 
  • Fast RH response time: 4 seconds, typical
  • Temperature sensor accuracy: ±0.25°C, typical (0 to +70°C)
  • Low current consumption: 0.3µA average (8-bit resolution, 3.3V supply), 0.62µA average (14-bit resolution, 3.3V supply), one RH and temperature measurement per second
  • Excellent stability against aging




Type Title Date
Datasheet PDF 1.06 MB
Application Note PDF 131 KB
Product Change Notice PDF 368 KB
Overview PDF 600 KB 日本語
4 items

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Sensor Software Modules for Renesas MCU Platforms
Middleware (FIT module and FSP module) and sample software packages that enable control and data acquisition for Renesas sensor products.
Sensor Renesas
1 item

Boards & Kits

Boards & Kits


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