# MGS 400

> Configure, maintain, and calibrate MGS-400 gas detectors via Bluetooth. (iPhone/iPad app by MSA - The Safety Company.)

- Source: https://appshunter.io/ios/app/mgs-400/id1441402354 (this page in markdown: same URL + `.md`)
- Developer: [MSA - The Safety Company](https://appshunter.io/developer/482957840)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 16 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, European Spanish
- Released: 2018-12-04
- Data updated: 2026-06-09
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/mgs-400/id1441402354/reviews.md

## What is MGS 400?

The Bacharach MGS-400 App allows users to configure, maintain and interface with compatible MGS-400 gas detectors. Once a Bluetooth connection has been established, the app replaces the need for specialty training/tools and makes compliance with safety standards (ASHRAE 15, EN 378) easy and effective.

Features include:
- Configuration (Rename device, define alarm thresholds, adjust Modbus settings,
configure relay behavior and manage analog output settings.)
- Maintenance (Test LED/buzzer function, relays, and analog output level.)
- Calibration (View sensor type, serial number and “Calibration Due” timer and initiate zero / span calibrations with customizable field calibration certificate.)
- Intuitive Interface (View current gas measurement and acknowledge alarm / fault status.)

## Key features

- Bluetooth connectivity
- Device configuration
- Alarm threshold adjustment
- Maintenance testing
- Zero/span calibration
- Intuitive interface

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/mgs-400/id1441402354/reviews.md

### 5/5 — Great App

*2019-10-16*

Very easy to configure and test devices with app(really the only way). User friendly!

## Frequently asked questions about MGS 400

### What is the MGS 400 app used for?

The MGS 400 app allows users to configure, maintain, and interface with compatible MGS-400 gas detectors. It simplifies tasks like setting alarm thresholds and performing calibrations.

### Does the MGS 400 app require specialized training?

No, the MGS 400 app is designed to replace the need for specialty training and tools. It provides an intuitive interface for managing your gas detectors.

### What safety standards does the MGS 400 app help with?

The app helps users comply with safety standards such as ASHRAE 15 and EN 378, making compliance easy and effective.

### Can I calibrate my gas detector with the MGS 400 app?

Yes, the app allows you to initiate zero and span calibrations. You can also view sensor details and the 'Calibration Due' timer.

### What devices is the MGS 400 app compatible with?

The MGS 400 app is available for iPhone, iPad, and iPod. It requires a Bluetooth connection to compatible MGS-400 gas detectors.

### How often is the MGS 400 app updated?

The latest version of the MGS 400 app is 2.0.1, last updated on January 30, 2026. This indicates a commitment to ongoing development and support.

### Does the MGS 400 app have ads?

Yes, the MGS 400 app contains advertisements. This is a common model for free utility applications.

### What is the user rating for the MGS 400 app?

The MGS 400 app has a perfect rating of 5.0 stars based on one review. This suggests a highly positive user experience among its current users.

## Version history (last 5 releases)

### 2.0.1 — 2026-01-30

Support for iOS 26.

### 2.0.0 — 2022-01-19

Enhanced User Experience
•	Simplified navigation 
•	Improved Test and Calibration modes - eliminates the chance of leaving your instrument in ‘Off-Line’ modes 
•	Improved Calibration Report sharing - uses device operating system to share calibration certificate PDFs 
•	General Bug Fixes
 
MSA Bacharach Cloud Connectivity
•	Optional cloud data storage for instrument and/or user information
•	Enables instrument usage statistics for better product support

### 1.2.0 — 2020-05-04

Bug fixes :
- Representation of measured values in %Vol and % Lel

### 1.1.0 — 2019-12-31

Bug fix:
Avoid overflowing of concentration and alarm related parameters.

### 1.0 — 2018-12-03

No release notes.

## Apps similar to MGS 400

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Hussmann Controls](https://appshunter.io/ios/app/hussmann-controls/id1501877672) | — | Free | Utilities |
| [Copeland CRLDS](https://appshunter.io/ios/app/copeland-crlds/id6462698326) | 5.0 (1) | Free | Utilities |
| [BluTest](https://appshunter.io/ios/app/blutest/id1468301498) | 4.0 (2) | Free | Utilities |
| [Carel Applica](https://appshunter.io/ios/app/carel-applica/id1446014385) | — | Free | Utilities |
| [BITZER Electronics ServiceTool](https://appshunter.io/ios/app/bitzer-electronics-servicetool/id1437610638) | 3.0 (2) | Free | Utilities |
| [MRLDS 400](https://appshunter.io/ios/app/mrlds-400/id1502566407) | — | Free | Utilities |

## More apps by MSA - The Safety Company

- [MSAsafety](https://appshunter.io/ios/app/msasafety/id1276643219)
- [MSA VR](https://appshunter.io/ios/app/msa-vr/id1328016292)
- [X/S Connect](https://appshunter.io/ios/app/xs-connect/id1362073024)
- [Bacharach Combustion](https://appshunter.io/ios/app/bacharach-combustion/id1417727307)
- [Hansen Gas Detector](https://appshunter.io/ios/app/hansen-gas-detector/id1506705824)

All apps by MSA - The Safety Company: https://appshunter.io/developer/482957840

## Related topics

[mgs 400](https://appshunter.io/ios/topics/mgs-400) · [mrlds 400](https://appshunter.io/ios/topics/mrlds-400) · [bacharach](https://appshunter.io/ios/topics/bacharach)

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-09.*