ITEAD Customer Care Center

Hello, I am evaluating to buy the cheap alarm system based on Sonoff RF Bridge 433 MHz. I have two basic and main I cannot answer by myself. RF Siren Is there any RF siren certified by Itead or tested by anyone actually working with RF Bridge ? Can I use the siren to bè turned on based on paired RF sensors alarms ? How ? Behaviour without internet connection Let's say a thief cut home Power. I can protect Sonoff RF with a battere/UPS. What does happen when internet connection is Lost ? Can automated actions on RF devices (like the siren above) still happen without internet connection to the Cloud ? Thanks ! Emiliano. https://lamiacasalettrica.com/