This smoke detector is designed to sense smoke entering into the smoke chamber. It does not sense gas, heat or flame. This smoke detector can monitor the air and, when it senses smoke, activates its built-in alarm buzzer to provide precious time for you and your family to escape from your residence before a fire spreads. Such an early warning, however, is possible only if the smoke detector is located, installed, and maintained as specified in this manual.

Note: If the smoke detector is not used in a network, it can only be used within single residential living units, that is, it should be used inside a single-family home or one apartment of a multi-family building. In a multi-family building, the smoke detector may not provide early warning for residents if it is placed outside of the residential units, such as on outside porches, in corridors, lobbies, basements, each residential unit should have smoke detectors to alert the residents of the unit.