Wireless smoke detectors feature flexible installation without wires, remote monitoring via smartphone apps, and interconnected alarms that trigger simultaneously across a home. They often use photoelectric sensors for smoldering fires, boast long-life batteries or 10-year lithium power, and may include smart home integration for features like phone alerts and remote hush functions. Other features include audible and visible alarms, self-testing, dust and insect protection, and integration with larger automation systems.