TVOC and Indoor Air Quality Sensor Platform

The ZMOD4410 Gas Sensor Module is designed for detecting total volatile organic compounds (TVOC) and monitoring indoor air quality (IAQ). It is a 12-pin LGA assembly (3.0 x 3.0 x 0.7 mm) that consists of a gas sense element and a CMOS signal conditioning IC. The module’s sense element consists of heater element on a Si-based MEMS structure and a metal oxide (MOx) chemiresistor. The signal conditioner controls the sensor temperature and measures the MOx conductivity, which is a function of the gas concentration. 

The measurement results can be read via an I2C interface with the user’s microprocessor, which processes the data to determine the TVOC concentration, IAQ rating and estimated carbon dioxide (eCO2) level. This flexibility makes the sensors in the ZMOD4410 platform capable of providing a variety of measurement options by varying the method of operation or changing the firmware used to interpret the resistance measurements. Downloadable libraries and source code are provided by IDT for the most common applications.


  • Measurement of total organic compounds (TVOC) concentrations and indoor air quality (IAQ)
  • Module algorithm estimates carbon dioxide level (eCO2)
  • Multiplexed input channel for heater, resistance, and temperature measurements
  • Internal auto-compensated temperature sensor; not stress sensitive
  • I2C interface: up to 400kHz
  • Configurable alarm/interrupt output with static and adaptive levels
  • Adjustable ADC resolution for optimal speed versus resolution: 16-bit maximum
  • Siloxane resistant

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
ZMOD4410AI1R Active LGG12D1 LGA 12 I Yes Reel Availability
ZMOD4410AI1V Active LGG12D1 LGA 12 I Yes Tray Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
ZMOD4410 Short-Form Datasheet Short Form Datasheet PDF 130 KB May 22, 2018
ZMOD4410 Datasheet Datasheet PDF 622 KB May 22, 2018
Application Notes & White Papers
ZMOD4410 Application Note - TVOC Sensing Application Note PDF 638 KB Jun 1, 2018
AN-1005 ZMOD4410 Application Note - Estimating CO2 Application Note PDF 615 KB May 24, 2018
Overview of TVOC and Indoor Air Quality White Paper PDF 315 KB May 24, 2018
ZMOD4410 Altium Library Footprint and Schematic Symbol PCB Design Files ZIP 23 KB Aug 14, 2018
ZMOD4410 Metal Oxide Gas Sensor for Indoor Air Quality Product Brief Product Brief PDF 137 KB Jun 21, 2018
Sensing Technologies and Sensor Solutions Overview 简体中文 Overview PDF 2.11 MB Jun 21, 2018

Software & Tools

Title Other Languages Type Format File Size Date
ZMOD4410 - Air Quality & eCO2 Firmware (bedroom, office, UBA) Software ZIP 533 KB Jun 29, 2018
ZMOD4410 - Low Power Firmware (available Jan 2019) Software ZIP 0 KB Jun 20, 2018
ZMOD4410 - Bathroom Firmware (coming soon) Software ZIP 0 KB Jun 20, 2018
ZMOD44xxx Programming Manual with ZMOD4410 Example Manual - Software PDF 514 KB Jun 11, 2018

Evaluation Boards

Part Number Title Sort ascending
ZMOD4410-EVK TVOC and Indoor Air Quality Sensor Platform Evaluation Kit