• LED - Red LED indicates that the smoke alarm is operating properly, HushTM, and alarm condition. Green LED indicates the presence of AC power.
• Photoelectric Sensor – Advanced photoelectric sensor may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Dust cover protects sensor during construction.
• Battery Backup (9V Battery Included) – Provides continuous protection even during power outages. Battery Pull Tab eliminates battery installation time and keeps battery fresh.
• Test Button – Tests unit’s electronic circuitry, horn and battery function.
• Quick Connect Power Harness – Makes installation fast and easy.

Product Description ------------------- The Kidde P12040 is a 120VAC powered photoelectric smoke alarm with 9V battery back up. This advanced smoke alarm has the ability to function as a stand-alone unit or in an interconnected system. The Kidde P12040 includes a test button, quick-connect power harness and offers a 10-year limited warranty. This alarm uses photoelectric sensing technology. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner that photoelectric alarms. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fire that can occur within the home. The Kidde model P12040 is a 120VAC powered alarm that includes a 9V battery backup to provide continuous protection during a power failure and included a quick connect power harness to make installation simple. Part Number (Ordering Number): 21006371 Architectural and Engineering Specifications - The smoke alarm shall be Kidde model P12040 or approved equal. It shall be powered by a 120VAC, 60Hz, 80mA source along with a 9V battery back up. The unit shall incorporate a photoelectric sensor with nominal sensitivity of 1.20%/ft to 3.36%/ft. The temperature operation range shall be between 40˚F and 100˚F (4˚C and 38˚C) and the humidity operation range shall be 5% - 95% relative humidity. The smoke alarm can be installed on any standard single gang electrical box, up to a 4” octagon junction box. The electrical connection (to the alarm) shall be made with a plug-in connector. A maximum of 24 Kidde devices can be interconnected in a multiple station arrangement. The interconnect system must not exceed the NFPA (National Fire Protection Association) limit of 18 initiating devices, of which 12 can be smoke alarms. With 18 initiation devices (smoke, heat, CO, etc.), interconnected, it is still possible to interconnect 6 strobe lights and or relay modules. The unit shall provide optional tamper resistance that deters removal of the unit from the wall or ceiling. The alarm shall include a test button that will electronically simulate the presence of smoke and cause the unit to go into alarm. This sequence tests the unit’s electronics, battery and horn to ensure proper operation. The unit shall include a piezoelectric horn that is rated at 85dB at 10 feet. The unit shall also include a low battery warning utilizing a brief alarm chirp every 30-40 seconds for a minimum of seven (7) days. The unit shall incorporate one red LED to indicate the alarm’s current status and mode of operation. The red LED will indicate one of two conditions: Standby Condition: The red LED will flash every 30-40 seconds to indicate that the smoke alarm is operating properly. Alarm Condition: When the alarm senses products of combustion and goes into alarm, the red LED will flash rapidly (one flash per second). The rapid flashing LED and pulsating alarm will continue until the air is cleared. The unit shall incorporate one green LED to indicate the presence of AC power. The unit shall at a minimum meet the requirements of UL217, NFPA72, The State of California Fire Marshall, NFPA 101 (One and two family dwellings) Federal Housing Authority (FHA), Housing and Urban Development (HUD). It shall also include a 10-year manufacture’s limited warranty. .com ---- Kidde P12040 ------------ The Kidde P12040 is a photoelectric smoke alarm powered by 120VAC and comes equipped with 9V battery backup. This advanced smoke alarm functions as a stand-alone unit or in an interconnected system. Product image view larger ( https://images-na.ssl-images-.com/images/G/01/th/us/kidde/PI12040_large._V395922374_.jpg ) Placement in living room view larger ( https://images-na.ssl-images-.com/images/G/01/th/us/kidde/PI12040_inaction_large._V395922374_.jpg ) Sensor Technology ----------------- The Kidde P12040 uses a photoelectric sensing technology that detects visible particles associated with smoldering fires sooner than ionization alarms. Ionization alarms detect invisible fire particles associated with flaming fires sooner than photoelectric alarms. Kidde recommends that both types of alarms be installed inside the home to protect against both types of fires. Installation ------------ The smoke alarm can be installed on any standard single gang electrical box, up to a 4” octagon junction box. The electrical connection (to the alarm) shall be made with a plug-in connector. A maximum of 24 Kidde devices can be interconnected in a multiple station arrangement. The interconnect system must not exceed the NFPA (National Fire Protection Association) limit of 18 initiating devices, of which 12 can be smoke alarms. With 18 initiation devices (smoke, heat, CO, etc.), interconnected, it is still possible to interconnect 6 strobe lights and or relay modules. The unit shall provide optional tamper resistance that deters removal of the unit from the wall or ceiling. Alarm Conditions ---------------- The alarm shall include a test button that will electronically simulate the presence of smoke and cause the unit to go into alarm. This sequence tests the unit’s electronics, battery and horn to ensure proper operation. There is one red LED to indicate the alarm's current status and mode of operation. During the standby condition, the red LED will flash every 30-40 seconds to indicate the smoke alarm is operating properly. During the alarm condition, the red LED will flash rapidly (one flash per second). The rapid flashing and pulsating alarm will continue until the air is cleared from the products of combustion. The unit will also have one green LED to indicate the presence of power. Unit specifications view larger ( https://images-na.ssl-images-.com/images/G/01/th/us/kidde/PI12040_linedrawing_large._V395922372_.jpg ) What's in the Box ----------------- One Kidde P12040, including test button, quick-connect power harness, 9V battery backup, and 10 year limited warranty. Item Specifications ------------------- * Model: P12040 * Power Source: 120VAC * Sensor: Photoelectric * Audio Alarm: 85dB at 10ft * Temperature Range: 40˚F (4.4˚C) to 100˚F (37.8˚C) * Humidity Range: 5%-95% relative humidity (RH) * Size: 5.6” in diameter x 1.55” depth * Weight: 1 pound * Interconnects: Up to 24 Kidde devices * LED: Green, receiving ac power / Red, alarm mode * Warranty: 10-year limited