🔥 SITERLINK 10-Year Battery Operated Smoke Detectors - Photoelectric Sensor Alarms with Test-Silence Button, UL Listed Fire Alarm Smoke Detectors - LED Lights - Home Safety - GS526A (4 Pack) Review

【10-Year Lifetime with Built-in Battery】SITERLINK smoke detectors battery powered includes 3V lithium battery, will last 10 years, no need to replace;support to detected and notified automatically if it is low battary or error occured. 【Photoelectric Sensor for Accurately Detect】Photoelectric sensor smoke alarms helps to monitor smoke and fires quickly, provides the warning of fires as soon as possible; the loudly alarm signal (Loud>85dB) helps your family keep far away from fire dangerous. 【Test-Silence Button and LED Lights】Fire alarm with test button would be activated before installation, press test button and hold it for 3 seconds until the LED light on, then release it within 2 seconds, it is activated successfully after heared “beep”; if sounds the alarm signal without fire dangerous, could push the test button to silence it for 10 hours, please clean smoke, dust or insects in it, or raplace a new one if the battary low. 【Easy to Install】SITERLINK smoke detectors provides mounting bracket, screws, and anchor plugs, the 3M magnet plate base are packeted together as well, convenient for you to choose different way to install it. 【High Quality and Friendly Customer Support】SITERLINK smoke alarms built with first-class fire-retardan PC plastic material, tested strictly before being sold in the market; any issue, please contact us, we will help you find a solution.