Fire Detector with Photoelectric Sensor, Automated Testing for Home/Shop/Business (1 Piece)

High-sensitivity 360-degree detection: Unique structural design and advanced photoelectric labyrinth, real-time monitoring of smoke presence, detects visible particles faster than ionization alarms. Function test button: This smoke detector is equipped with a function test button for operational testing. This allows the alarm detector to be reset after an alarm. Switched to monitoring mode. High-quality standard and easy to install: The outdoor casing of this smoke detector is made of high-quality, eco-friendly, and fire-retardant ABS+PC plastic. Complete protection for your safety: The smoke detectors have a built-in buzzer. Once the danger of smoke and fire is detected, the red LED indicator will flash immediately, and a loud alarm of over 80dB will sound to quickly alert you and your family.