Name: HQT-M Series Gas Sensor Module
Brand: Huanqitong
SKU: HQT-M
Availability: InStock

Overview

For instrument manufacturers and system integrators, we supply the core building blocks of gas detection: sensor modules, detection electronics, mechanical parts and communication protocols. Modules ship pre-calibrated with temperature and humidity compensation, so your team can integrate without starting from scratch — cutting time to market significantly.

We support two-tier OEM / ODM: buy modules and integrate them yourself, or let us handle complete instrument design and manufacturing.

Available Principles & Gases

Electrochemical

CO, H2S, O2, NH3, Cl2, SO2, NO2 and other toxic gases — low power, high accuracy.

PID (Photoionization)

VOC detection with ppb-level resolution for low-concentration applications.

NDIR Infrared

CO2, CH4 and more — resistant to poisoning, long service life, stable for continuous duty.

Catalytic Bead

Combustible gas LEL detection, low cost and fast response.

Laser / IR Particulate

Particulate modules for dust monitors and air quality instruments.

UV-DOAS

SO2, NOx and other flue gas components for CEMS and high-temperature analysis integration.

Interfaces & Customization

Outputs include 4-20mA, RS485 / Modbus, 0-5VDC, TTL and wireless (4G / LoRa). Range, accuracy, dimensions and mounting can be tailored to your instrument design, and cloud protocol integration is provided free of charge.

Selectable Technologies & Models

HQT series · ranges & combinations customizable

Model	Principle	Gas	Output
HQT-M-EC	Electrochemical	Toxic / Oxygen	UART / I²C / 4-20mA
HQT-M-PID	PID	VOC	UART / I²C
HQT-M-NDIR	NDIR	CO₂ / CH₄ / LEL	UART / 4-20mA
HQT-M-CAT	Catalytic bead	Combustible	UART / 4-20mA

FAQ

Which technologies are available?

Electrochemical, PID, NDIR and catalytic bead — covering toxic, VOC, combustible and oxygen.

What output interfaces are offered?

Standard UART, I²C and 4-20mA, some with relay, plug-and-play.

What is the MOQ?

Standard modules MOQ 50 pcs; custom versions per project, samples available first.

What documentation is provided?

Reference design, protocol docs, calibration SDK and schematics for fast integration.

MODULE GALLERY

Sensor Module PCB - board-level delivery for integration

Need Samples or Custom Development?

Tell us your target gas, range, dimensions and interface requirements.

Talk to Engineering

Gas Sensor Module

HQT-M SeriesGas Sensor Modules