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AG-4 module with alpha7 series sensors - AG-4-GSB-MA7S（D）

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It has good stability and selectivity
Digital communication mode
Indoor and outdoor air quality testing
Gas detection in industrial fields, etc

Model Number: AG-4-GSB-MA7S（D）
Data Sheet:

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Product Specification

AG-4 module with alpha7 series sensors Product Description：

The AG-4-GSB-MA7S（D） is an embedded type module equipped with the Alphasense 7 series electrochemical Sensor, capable of detecting various toxic gases such as CO, H2S, and NO2 in diverse environments. The module has been pre-calibrated before leaving the factory and has good stability and selectivity. It includes a built-in temperature sensor for data correction via software algorithms to minimize environmental impact on measurement accuracy. It utilizes digital communication through a UART bus output for gas concentration readings, which allows users to easily and quickly integrate the module into various systems. The module is suitable for both indoor and outdoor air quality monitoring, as well as gas detection in industrial applications.

The module features an automatic short-circuiting of PINs when power is off with zero bias. For zero-bias sensors, the module operates stably after being powered on for 30 minutes. For sensors with bias, it is recommended to power on the module for more than 24 hours before use.

Equipped with seven series electrochemical gas sensor module (CO, H2S, NO2) AG-4-GSB-MA7S （D）Technical Specification：

Item	Specification
Model Number	AG-4-GSB-MA7S（D）
Target Gases	Toxic gases (CO, H2S, NO2, etc.)
Sensing Principle	Catalytic
Detection Range	See corresponding sensor spec
Resolution	See corresponding sensor spec
Measurement Error	< ±5% FS
Operating Voltage	3.2 - 5.5V DC
Operating Current	≤ 500mA@5V
Output Signal	UART (+3.0V TTL)
Temperature Range	-20°C - +55°C
Humidity Range	0% -90%RH
Pressure Range	1 ± 0.1 atm
Storage Temperature	10 to +40°C
Size	LWH=49mm34mm26mm
Expected Life	See corresponding sensor spec