# RMU3 Config

> Configure and monitor cathodic protection rectifiers via Bluetooth. (iPhone/iPad app by Mobiltex Data.)

- Source: https://appshunter.io/ios/app/rmu3-config/id1089017766 (this page in markdown: same URL + `.md`)
- Developer: [Mobiltex Data](https://appshunter.io/developer/1050682800)
- Category: Utilities
- Price: Free
- Rating: 3.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.6 · 23 MB
- Languages: American English
- Released: 2016-04-26
- Data updated: 2026-08-30
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rmu3-config/id1089017766/reviews.md

## What is RMU3 Config?

*** Requires a corTalk® RBT1 or RMU123PGM and RMU3 to use. ***
Contact us at 'sales.rmu3@mobiltex.com' to purchase.

This app is for configuring the corTalk® RMU3 (Remote Monitoring Unit 3) with a Bluetooth configuration interface. Both the RBT1 or RMU123PGM are compatible. They both function as a complete RMU3 programming interface but only requires the Bluetooth connection of your phone to use. 

The RMU3 is used to monitor a cathodic protection rectifier with accurate measurement of a wide variety of signals; it can also control the rectifier for survey operations by switching a relay at precisely timed intervals. This app allows access to diagnostic information on the RMU3 and allows setting up the configuration to meet the customer's needs.  Note that measurement data logs, due to their size, can only be extracted from the RMU3 using the PC configuration application through the USB port.

The app allows full configuration of the RMU3 including 
- slot measurement types
- limits
- slot scaling and offset
- relay options
- instant off timing
- interruption On/Off/Cycle

Other features include the
- viewing of readings and their limits
- detailed status screen for troubleshooting
- integrated manual
- wiring diagrams for each measurement type

The RBT1 and RMU123PGM is always in a Bluetooth pairing mode and requires a pairing code entered on the app. The pairing code (default=123456) can be found and changed with the app. Once paired, the iOS device can reconnect without needing to re-enter the code. The RBT1 pairing code can be reset by tapping the RBT1 5 times in 10 seconds with a user-supplied magnet.

## Key features

- Bluetooth configuration interface
- Remote monitoring of cathodic protection rectifiers
- Full RMU3 configuration
- View readings and limits
- Diagnostic status screen
- Integrated manual and wiring diagrams


## Frequently asked questions about RMU3 Config

### What hardware is required to use RMU3 Config?

RMU3 Config requires a corTalk® RBT1 or RMU123PGM and the RMU3 unit to function. These components act as the programming interface and the remote monitoring unit.

### Can I extract measurement data logs with RMU3 Config?

Measurement data logs cannot be extracted directly through this app due to their size. Data extraction requires the PC configuration application via a USB port.

### How do I pair my device with the RMU3 using RMU3 Config?

The RBT1 or RMU123PGM is always in Bluetooth pairing mode. You will need to enter a pairing code within the app, which defaults to 123456 and can be changed.

### How often is RMU3 Config updated?

The latest version is 1.1.10, released on April 5, 2026. While this indicates a recent update, specific update frequency is not detailed.

### What is the age rating for RMU3 Config?

RMU3 Config has an age rating of 4+, making it suitable for a wide range of users.

### Does RMU3 Config have ads?

No, RMU3 Config does not contain advertisements. It is a free application focused on its utility functions.

### What devices is RMU3 Config compatible with?

RMU3 Config is available for iPhone, iPad, and iPod devices, indicating compatibility with Apple's iOS ecosystem.

### What are the key configuration options available in RMU3 Config?

The app allows full configuration of the RMU3, including slot measurement types, limits, scaling and offset, relay options, and interruption timing.

## Version history (last 5 releases)

### 1.1.11 — 2026-08-26

Included firmware:
RMU3 v1.29
RBT1 v1.09
RMU3PGM v1.13
Support for time of day reporting added.
Support for RECT16 4 drains added.
Fix bug where keyboard hides textfields in measurement options.

### 1.1.10 — 2026-04-05

- Updated RMU3 manual v2.05
- Updated RMU3 firmware v1.29
- Updated RMU123PGM firmware v1.13

### 1.1.9 — 2023-10-12

Updated firmware for the RMU3 v1.28

### 1.1.8 — 2023-09-28

RMU3 firmware updated to v1.28.

### 1.1.7 — 2021-09-23

Updated firmware:
- RBT1 v1.09
- RMU123PGM v1.12
- RMU3 v1.26
- Manual v113
New programmer firmware releases

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## More apps by Mobiltex Data

- [uGI1 Config](https://appshunter.io/ios/app/ugi1-config/id1050682802)
- [corView](https://appshunter.io/ios/app/corview/id1146917292)
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- [RMU1 Config](https://appshunter.io/ios/app/rmu1-config/id1232422915)
- [RMU1ER Config](https://appshunter.io/ios/app/rmu1er-config/id1332836508)

All apps by Mobiltex Data: https://appshunter.io/developer/1050682800

## Related topics

[rmtc](https://appshunter.io/ios/topics/rmtc)

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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 2026-08-30.*