# S4C-FS — Software for configuring FS

> Software for configuring FS (iPhone/iPad app by SUTO iTEC (China) Co. Ltd.)

- Source: https://appshunter.io/ios/app/s4c-fs/id1619076144 (this page in markdown: same URL + `.md`)
- Developer: [SUTO iTEC (China) Co. Ltd](https://appshunter.io/developer/1511502112)
- Category: Utilities
- Price: Free
- Age rating: 17+
- Requires: iOS 12 · 35 MB
- Languages: English
- Released: 2023-03-11
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/s4c-fs/id1619076144/reviews.md

## What is S4C?

S4C-FS Service App is used by service people to check sensor readings, perform settings. 
It uses Bluetooth Low Energy (BLE) to communicate with sensors.

Features:
* Show Online values: 
  - Flow
  - Velocity
  - Pressure
  - Temperature
* Perform Settings:
  -  Flow Settings
  -  Units Settings
  -  Reference Conditions
  -  Factory Settings
  -  Counter Settings
  -  Output Settings


## Version history (last 5 releases)

### 2.4.25 — 2025-08-13

1. Updated user permissions: Ordinary Users can now access Zero Flow/Pressure Calibration and Cut-off settings. 
2. Fixed multiple Output Settings issues, including 4 mA/20 mA being editable for Variable scaling, incorrect restoration of Pulse per unit and Device address, and analog scaling type handling. 
3. Improved unit settings logic and fixed issues with L/min flow unit, unexpected gas factor changes, and blank Calibration page on S401/S430. 
4. Corrected device identification: Device ID 0x1218 now maps to S418 (previously misidentified as S451).
5. Fixed maximum flow reading on S418-V when selecting “0…max flow”.

### 2.4.17 — 2025-05-16

1. Fixed the connection issue with GD S418-V

### 2.4.16 — 2025-04-25

1. Supports the S451 & S453 vacuum versions.
2. Added the new device ids:
 - S415: S415 DN40, S415 DN50
 - S418: S418 DN40, S418 DN50, S418-V DN40, S418-V DN50
3. Fixed the issue where saving Output Settings for S451 failed when Alarm was enabled.
4. In the Output Settings, FAD and DryAir cannot be selected when the gas type is not Air.
5. Fixed the issue that "0...max" can't be saved in Output Settings.

### 2.4.14 — 2025-03-17

1. Fixed the issues of Output Settings for S402 NXP and S430.
2. Fixed the connection issue with S418.
3. Fixed the connection issue with S430.
4. Fixed the issues with S451/453 line chart display.

### 2.4.10 — 2025-02-28

1. Fixed the issue where scanning the QR code of an ordinary user failed.
2. Fixed the issue where the device could not be connected (Bluetooth connection was not released).
3. Fixed the issue where a blank page appeared after saving Flow Settings.
4. Fixed the issue where a warning popup appeared after saving Unit Settings.
5. Ordinary users can access the logger settings for S418.

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## More apps by SUTO iTEC (China) Co. Ltd

- [S4C-US](https://appshunter.io/ios/app/s4c-us/id1511502113)
- [S4C-DP](https://appshunter.io/ios/app/s4c-dp/id1641425429)
- [Macteek](https://appshunter.io/ios/app/macteek/id6747701100)

All apps by SUTO iTEC (China) Co. Ltd: https://appshunter.io/developer/1511502112

## Related topics

[fs configure](https://appshunter.io/ios/topics/fs-configure) · [s4c](https://appshunter.io/ios/topics/s4c)

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*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 2026-05-15.*