If relevant, a releasing panel will activate relays to dispense pre-motion sprinkler techniques or special hazard suppression for instance a chemical agent or h2o mist on to the shielded House. These units are connected to a signaling line circuit. The panel can provide electricity to and communicate with these devices https://www.firesense.co.uk/type/addressable-fire-system/addressable-fire-alarm-control-panels/