From: R914.25

A GSM Remote switching device, this unit has 4 digital inputs, 2 digital outputs, an optically isolated input and 2 10A relay outputs.

A simple and easy to configure GSM switch that allows the control of 2 10A loads, by means of a SMS or a missed call

STM32 SMS Switch

Our newest version of the SMS switch runs on our open source GSM IoT controller. The firmware runs on STM32 ARM micro-controller and uses a SIM800C GSM Modem.

This unit has 2 digital inputs, 2 digital outputs, an 220V optically isolated input and 2 10A relay outputs. The SMS Switch allows to control and monitoring of electrical equipment by means of a SMS or a missed call.

The unit functions as follows:

  • Register and listen for incoming SMS/calls on the GSM network.
  • Retrieve SMS and action as detailed in the programming manual.
  • Listen for incoming calls and action as detailed in programming manual.
  • Send a SMS when the inputs or outputs change.

Features:

Input voltage 8V to 24V DC

  • 2 10A Relay outputs
  • 2 Digital Outputs (pulled down to ground)
  • 2 Digital Inputs (pulled down to ground)
  • 220V Optical Input (for main voltage sensing)
  • Customer provided mini SIM card, contract or prepaid.

Download the STM32 Switch-Brochure and the STM32 SMS Switch User Manual