The GSM-PRO2 module has Change Over contacts which cannot only use as potential free contact, but also loaded up to 5A/230VAC per output. The output can be controlled via the CONTA-SUPERVISON IoT Portal/App, GSM-PRO2 App, SMS command or by a phone call. The GSM-PRO2 has the ability to send a confirmation message with a free configurable text. The output can be switched on/off or as a pulse output. The duration of the pulse is free configurable.