The GMA400 is designed for reliable detection of combustible gases, toxic gases, and oxygen in complex industrial environments. Supporting up to 128 transmitters and 32 additional virtual channels for calculated values (e.g., averages) and ambient parameters such as relative humidity, it consolidates critical data into one central platform.

Operators benefit from a high-resolution 2.4-inch color display and optional visualization on large touch-panel PCs, providing clear overview and group displays for fast, intuitive system insights. Ethernet connectivity with Modbus TCP and integrated web server ensures seamless integration into modern infrastructures.

The controller features eight onboard relays, expandable by up to 192 additional relays through external relay and display modules, enabling flexible and scalable safety architectures. Patented ACDC technology further allows digital communication via existing 4–20 mA cabling, supporting cost-efficient modernization of legacy systems.

With its combination of transmitter and virtual channel capacity, advanced visualization, and scalable design, the GMA400 sets new benchmarks in fixed gas detection.