A smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial security devices issue a signal to a fire alarm control panel as part of a fire alarm system, while household detectors, known as smoke alarms, generally issue a local audible or visual alarm from the detector itself.











![[NSW] Photoelectric Smoke Alarm $7.49 (Was $9.99) @ ALDI North Sydney](https://files.ozbargain.com.au/n/33/455433.jpg?h=5424ec49)








