Electronic meter.
Relays.
Piezo siren & alarm, electrical siren.
Smoke detector, fire, CO, gas, heat, water detector.
Fire alarm system, smoke detector, fire detector, CO detector, gas detector, heat detector, water detector.
Piezo sirne, backup alarm, battery backup siren, central door lock.
Conventional and addressable fire alarm systems.
Smoke alarm.
Domestic smoke alarm, conventional smoke detector, addressable smoke detector, fire alarm control panel, fire detection system.