Protect Your Family with Upgraded Photoelectric Alarm Photoelectric Smoke DetectorAdopts advanced photoelectric sensor, which detects smoking fires more quickly and accurately, ensuring no delay in alerting you of danger.Install in Just MinutesThe battery operated smoke detector can be mounted quickly and cleanly with this magnetic assembly system.The smoke detector requires no rewiring.Easy to mount on any wall or ceiling with the included mounting bracket, screws and anchor plugs.Self-monitoring and Silence Smoke Alarm FunctionsEquipped with a low battery warning, so you know when it's time to replace the unit for safety.If non-emergency smoke causes nuisance alerts, you can easily silence them by pressing the test and silence button.Large CoverageSmart fire alarm is small in size, but amazing in performanceQuality GuaranteedSmoke alarm is upgraded premium ABS material, temperature resistant up to 212, ensuring excellent heat resistance and high durability.