Smart WiFi Wireless Photoelectric Smoke Detector Detector With Replaceable Battery

Battery Life Years Operating Voltage Lithium Battery Noise Level Front Of Straight Line Work Light Flashes Approximately Every Seconds To Confirm That The Smoke Alarm Is On And Works Properly Acoustic And Optical Alarm Signal When The Detected Smoke Reaches The Smoke Alarm Threshold Alarm The Red Light Flashes Quickly The Buzzer Sounds And Make A Quick Beep