# RK Link

> Connects RIKEN KEIKI gas monitors to smartphones for remote monitoring and alerts. (iPhone/iPad app by 理研計器株式会社.)

- Source: https://appshunter.io/ios/app/rk-link/id1422964820 (this page in markdown: same URL + `.md`)
- Developer: [理研計器株式会社](https://appshunter.io/developer/1422964819)
- Category: Business
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 13.0 · 16 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, European Portuguese, Russian, Chinese (Simplified, China), European Spanish and 1 more
- Released: 2019-02-05
- Data updated: 2026-09-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/rk-link/id1422964820/reviews.md

## What is RK Link?

RK Link is a basic application for connecting a RIKEN KEIKI portable gas monitor to a smartphone.
By pairing with a detector via Bluetooth, you can automatically send an email when an alarm occurs. Up to 100 destinations can be registered. You can quickly notify third parties of emergencies.
You can also display the gas concentration and change the gas detector settings.
・ Alarm real-time alert
An e-mail is automatically sent when various alarms such as gas alarm, man-down alarm and panic alarm are issued.
Gas alarm: An alarm sounds when the gas concentration reaches the danger zone.
Man-down alarm: If a worker does not move for a certain period of time due to a disaster or accident other than gas, an alarm will sound automatically.
Panic alarm: By manually sounding the alarm, the operator can inform the surroundings of danger and ask for help.
Failure alarm: An alarm sounds when the gas detector does not operate normally, such as when the battery is dead or the circuit is broken.
Remind alert: An alarm sounds when the regular inspection of the gas detector has expired, such as the calibration deadline or bump deadline, and tells you when to perform regular inspections.
In addition to alarm types and gas concentrations, e-mails can also be used to send location information using a smart phone's GPS and a management number that is set arbitrarily.
・ Gas concentration display
Acquires measurement data from the connected gas detector and displays the gas concentration.
・ Change various settings
Gas detector settings such as alarm points, display language, and calibration deadline can be changed. You can also set an arbitrary management number on the main unit or application.

## Key features

- Real-time alarm alerts (gas, man-down, panic)
- Automatic emergency email notifications
- GPS location data in alerts
- Gas concentration display
- Remote device setting changes
- Up to 100 email destinations


## Frequently asked questions about RK Link

### What is RK Link used for?

RK Link connects RIKEN KEIKI portable gas monitors to your smartphone. It allows you to receive real-time alarm alerts, view gas concentrations, and change device settings remotely.

### How does RK Link send emergency alerts?

When an alarm is triggered on the connected gas monitor, RK Link can automatically send an email notification. This email can include the type of alarm, gas concentration, and your smartphone's GPS location.

### Can RK Link be used offline?

The application requires a Bluetooth connection to the RIKEN KEIKI gas monitor for data acquisition and settings changes. Email notifications will also require an active internet connection on the smartphone.

### What types of alarms does RK Link support?

RK Link supports various alarm types including gas alarms, man-down alarms, panic alarms, failure alarms, and remind alerts for inspection deadlines.

### How many email recipients can be registered in RK Link?

You can register up to 100 email destinations in RK Link to ensure that multiple parties are notified in case of an emergency.

### What devices is RK Link compatible with?

RK Link is available for iPhone, iPad, and iPod devices. It was last updated on February 27, 2026.

### Is RK Link free to use?

Yes, RK Link is available for free. It does not have in-app purchases or advertisements.

### What is the age rating for RK Link?

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

## Version history (last 5 releases)

### 0.4.0005 — 2026-08-21

Age restriction updated

### 0.4.0004 — 2026-02-27

Added France to the list of available location.

### 0.4.0003 — 2026-01-07

Added France to the list of available location.

### 0.4.0002 — 2024-02-08

Compatible with new models.

### 0.4.0001 — 2024-01-12

Compatible with iOS16

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## More apps by 理研計器株式会社

- [RK Link Ver.2.0](https://appshunter.io/ios/app/rk-link-ver20/id6737680517)

All apps by 理研計器株式会社: https://appshunter.io/developer/1422964819

## Related topics

[rk link](https://appshunter.io/ios/topics/rk-link)

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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 2026-09-01.*