GSM Relay and Remote Control from Your Phone

GSM Relay and Remote Control from Your Phone

IoT relay · 4 outputs · Temperature · Scheduling · Alerts

Etabox is a versatile remote control device that allows you to control relays, heating, Webasto, lights, pumps and other 12V or 24V devices remotely from your phone. Etabox operates with a PWA application running in a browser, which can also be installed on your phone like a regular application.

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IoT Modem

Built-in modem – no separate router or internet connection required.

12V / 24V

Works with 7–34V supply voltage, suitable for most systems.

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4 Outputs

OUT1–3 voltage control + OUT4 potential-free solid-state relay.

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Temperature

Two built-in temperature sensors with 1.5m cables.

Scheduling

Schedule and automate device operation by time of day.

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Alerts

Alerts for temperature, voltage and input states.

What is a GSM Relay?

A GSM relay refers to a device that can control electrical devices remotely via a phone. Etabox operates as a modern IoT-based remote control relay that connects to the internet via an internal IoT modem.

From the application, you can control the device outputs, monitor temperatures, operating voltage and input states, and receive alerts directly to your phone.

Remote Control Relay for 12V and 24V Systems

Etabox works in both 12V and 24V systems. The operating voltage range is 7V – 34V.

OUT1, OUT2 and OUT3 outputs provide the same operating voltage as Etabox is powered with. For example, in a 12V system, the outputs provide 12V and in a 24V system 24V when controlled.

Each output can handle a maximum load of 1A. For larger loads, a standard 12V or 24V relay can be used.

Potential-Free Solid-State Relay

OUT4 functions as an internal PhotoMos solid-state relay that connects pins 19 and 20 together. The output is potential-free and is suitable for example for remote use of buttons, start contacts and control inputs.

OUT4 allows, for example, connection in parallel with a device's ON/OFF button, so Etabox can simulate a button press remotely.

Webasto and Heating Remote Control

Etabox is excellent for remote control of Webasto, Eberspächer and other heaters. Some heaters can be started directly from Etabox output with a small wake-up current without a separate relay.

In models that support W-Bus and LIN bus, LIN-based controls can also be used.

Scheduling and Pulse Control

All outputs support continuous control, scheduling and pulse feature.

With the pulse feature, the output can be activated for a short period, for example 1–9999 milliseconds. This can be used for example:

  • Gate opening
  • Start button simulation
  • Relay control
  • Momentary light control
  • Pump start-up

Temperature Monitoring and Alerts

Etabox includes two temperature sensors that can be used to monitor, for example, the temperature of a cottage, car, boat or technical room.

Alerts can be created based on temperature, operating voltage or input status. The user can determine:

  • When the alert triggers
  • Alert limits
  • The text of the notification displayed

For example: "Frost warning!" when the temperature drops below 2°C or "Low battery" when the battery voltage drops too low.

Input Monitoring

With IN1 and IN2 inputs, the status of external devices can be monitored or voltage can be measured.

Inputs can be used for example as feedback, so the application can see if the device being controlled is actually running.

The voltage display can also be scaled as a percentage. For example: 0V = 0%, 10V = 100%.

Use Cases

  • Webasto remote control
  • Eberspächer heater control
  • Cottage heating remote start
  • Lighting remote control
  • Pump control
  • Boat freezer control
  • Car auxiliary heater control
  • Technical room temperature monitoring
  • Vehicle battery monitoring
  • Remote start via relay
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Frequently Asked Questions

Can Etabox control a standard relay?

Yes. OUT1, OUT2 and OUT3 outputs can control standard 12V or 24V relays.

Does Etabox work without monthly fees?

Etabox uses internet connection via an internal IoT modem. Etabox has no separate usage, application or cloud service fees. You only pay the SIM card subscription fees to your chosen operator.

Can Etabox control Webasto?

Yes. Etabox is suitable for remote control of Webasto and other heaters.

Can outputs be used for pulse control?

Yes. All outputs support pulse feature, where the output can be activated for a short, determinable period.

What operating voltages does Etabox support?

Etabox operates at 7V – 34V operating voltage and is suitable for both 12V and 24V systems.