Smoke Detector with Photoelectric Sensor, Fire Alarms Smoke Detector 10 Year Battery Operated with LED Indicator & Silence Button, Smoke Alarm for Home and Kitchen GW208B, 4 Packs

SMOKE DETECTOR 10 YEAR BATTERY OPERATED: The 10-year built-in lithium battery provides longer, more effective protection for your home. You don’t need to buy additional batteries or worry about changing them frequently. After the batteries have run out, you can simply replace the alarm with a brand new one.
ADVANCED PHOTOELECTRIC SENSORS: Our fire alarms smoke detectors use photoelectric sensors with an average response time of 15-50 minutes faster than ionisation sensors, helping you to detect smoke particles more quickly in the insidious combustion phase.
TEST/SILENCE BUTTON: No need to be bothered by false alarms! Even if smoke from cooking or bathing triggers the alarm, you can easily stop the false alarm sound by pressing the silence button, ensuring you a peaceful rest.