Mobile alerting with tracking & escalation for Arduino

Temperatur Alert


When critical systems fail, SIGNL4 is the fastest way to alert your staff, engineers, IT admins on call and “in the field”. SIGNL4 provides reliable notifications via mobile app push, text and voice calls with tracking, escalations and duty scheduling.

Arduino is an open-source hardware and software company, project and user community that designs and manufactures single-board microcontrollers and kits for building digital devices. It can be used for prototyping and IoT projects. Arduino also offers an all-in-one IoT platform.

Pairing Arduino with SIGNL4 can enhance your daily operations with an extension to your team wherever it is. The integration does not only allow you to know when a critical issue has occurred but also when it was resolved no matter where you are.

 How it Works

Arduino compatibility allows you to distribute operational alerts to a mobile SIGNL4 team by using a ready-made plugin. Persistent notifications and acknowledgement requirements ensure that issues will be handled before it is too late.

 Integration Capabilities

  • Teams are alerted via mobile push, SMS text and voice call
  • Staff can acknowledge and take ownership for critical events that occur
  • Alerts are escalated in case of no response
  • Communicate within an alert to address a particular problem
  • Inbound webhook or email establishes connection from Arduino to SIGNL4
  • On-call scheduling to alert the right people at the right time
  • Get recovery information as well


  • Industrial IoT
  • Industry 4.0
  • IoT Service Alerting

Tickets and Incidents in Arduino are sent to SIGNL4

Event categorization, routing and automated delivery

Persistent Notifications by push, text and voice call with Tracking, Escalation and Confirmation to Staff on Duty


The integration of Arduino and SIGNL4 is done by sending an HTTP Post request.


A SIGNL4 account (

A Arduino board and an Arduino account (

There are various options to send HTTP Post requests from Arduino. We use the code sample from ArduinoJson. You can use the following code whenever you want to send an alert to your SIGNL4 team, for example when sensor value reaches a certain threshold.

// Alert data (JSON)
DynamicJsonDocument data(2048);
data["Title"] = "Arduino Alert";
data["Message"] = "Temperature too high.";
data["Temperature"] = "4";

// Serialize JSON document
String json;
serializeJson(data, json);

HTTPClient http;

// Send request to SIGNL4
// Replace "team-secret" with your SIGNL4 team secret

// Read response

// Disconnect

Test it

That is it and now you can test the alert. You can do so by running the above code on your Arduino board. As a result you will receive an alert in your SIGNL4 app.

SIGNL4 can further increase the visibility of alerts through its Signals and Services section. Augmenting the color and icon of alerts will provide more relevant information at a glance without having to open the alert.


Change alert color and override title + text 

Override text, colors and titles are triggered by keywords set within the mobile app.

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