Smoke Detector Hardwired, Smoke Alarm Interconnected with Battery Backup, Photoelectric Fire Alarms Smoke Detectors with LED Lights, UL217 Listed Fire Alarm for House, GS517, 6 Packs

Features

• Operated by AC 120V with 9V Battery Backup: SITERLINK hardwired smoke detector will last 10 years; the device includes 9V lithium battery, can be used normally even if the power outages; detected and notified automatically if it is low battary or error occured
• Photoelectric Sensor for Accurately Detect: Photoelectric sensor smoke alarm 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
• Alarming with Wired Interconnection: SITERLINK smoke detector with hardwired interconnection fuction up to 12 devices can be connected, one of alarms detects smoke, others will alarm with same sound signal but NO red LED flash, reliable security guards of different room of your big house
• Test-Silence Button and LED Lights: Fire alarm with test button would be tested weekly by pushing the test button; if sounds the alarm signal without fire dangerous, could push the test button 2 seconds to silence it, please clean smoke, dust or insects in it; the green LED light means working, the red LED light is alarming or warning
• High Quality and Friendly Customer Support: SITERLINK smoke alarm 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