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GMJA400-S-MIN Ultra-Compact Single-Gas Sensor Module
Detection Modules

GMJA400-S-MIN Ultra-Compact Single-Gas Sensor Module

GMJA400-S-MIN

35 × 25 mm and about 30 g, the smallest module in the Anhe series. Sized for handheld and wearable terminals.

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Overview

35 × 25 mm and about 30 g: the MIN is the smallest module in the Anhe series, sized for handheld detectors, wearables and compact IoT terminals where board space is the binding constraint.

One gas channel, chosen from 500+ options, with the range set at order. It is a diffusion-only module and runs from a single 3.3 V rail at around 2 W, which keeps it inside the power budget of a battery-powered instrument.

The ABS housing carries the sensor, the signal conditioning and the protocol stack, so the integrator wires power and a data line and reads calibrated values. No calibration rig, no application code.

Specifications

Values below are for the standard configuration. Gas, range, sampling mode, housing and output are set at order, so confirm against the datasheet before design freeze.

Target gas Single gas from 500+ options: combustibles, toxics, VOCs, dust
Detection principle Electrochemical, catalytic bead, NDIR, PID, thermal conductivity, semiconductor
Sampling mode Diffusion
Measuring range 0-100 %LEL, 0-25/30 %VOL, 0-1 ppm up to 0-5,000 ppm, configured at order
Accuracy ±1 %FS to ±3 %FS
Response time T90 10-120 s, depending on sensor
Output signal UART / RS485 / WiFi / Bluetooth
Power supply DC 3.3 V, 2 W
Housing material ABS
Dimensions 35 × 25 mm
Weight ≈30 g

Need the GMJA400-S-MIN configured to your gas list?

Send the gases, the ranges and the host enclosure. We come back with a model recommendation, the datasheet and a price.

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Technical background

The specification above only makes sense alongside the constraints behind it. These notes explain how the numbers on this page are usually set.

Selection

Twelve questions to ask a gas detection OEM before you send a PO

Most of these take one email to answer. The four that matter most are the ones about certification ownership, firmware control, tooling and support, and they are the four buyers ask least often.

Read the guide →
Selection

Why a wider measuring range is not a safer one

Specifying 0-1000 ppm where 0-100 ppm would do costs accuracy exactly where the alarm sits, and can hide a leak until it is large. Range selection is an accuracy decision.

Read the guide →

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