When it comes to large alarm installations, there is often a requirement to have several sirens and strobe lights. In order to do this safely, the best way is to use an isolated relay module. This enables you to supply an external power source so as not to overload the power supply on the alarm panel and switch high currents to multiple sirens and strobe lights.
15A Switching current
Easy connection via wire terminals
NO and NC contacts
Isolated to protect the alarm panel
Relay coil protection for spike free operation