The smoke alarm is a “hardwired” type that runs on the 120VAC house electricity with a 9 volt battery backup. The smoke detector battery door is open and the green LED is not illuminated which indicates there is no 120VAC power. The 9 volt battery stamp said it was manufactured in 1999!
SS-168 Smoke Detector Fire Alarm Sensor With Battery
PRODUCT INTRODUCTION
A smoke detector is a device that senses smoke, typically as an indicator of fire. Commercial and residential security devices issue a signal to a fire alarm control panel as part of a fire alarm system, while household detectors, known as smoke alarms, generally issue a local audible or visual alarm from the detector itself.
PRODUCT FEATURE
※Independent installation on ceilings and walls, with mounting bracket, which is easy to install and do not need to debug.
※With specially designed cover, can protect it from dust.
※Built-in dedicated IC: with stable performance and high sensitivity.
※Can monitor air and detect smoke with optical principles. When it reaches the maximum amount that the chamber can bear, it will alert.
※LED light flash indicator.
※Low battery indication.
※With a test button: can take analog alarm tests of the smoke alarm.
※Can warn and alert people to stay far away from dangerous field when it detects smoke.
※Suitable for use in house, shop, school, office building, storage areas, etc.
TECHNICAL SPECIFICATION