The Kidde P4010ACS is a 120V AC hardwired photoelectric smoke alarm with a 10-year sealed lithium battery backup, eliminating battery replacements for the life of the alarm. A voice messaging system announces end-of-life replacement reminders and Hush mode activation. An ambient light sensor adjusts LED brightness automatically. This model has been replaced by the Kidde 20SA10.
Does the P4010ACS battery backup ever need replacement?
No. The P4010ACS has a 10-year sealed lithium battery backup that cannot be replaced. A voice announcement will notify you when the battery reaches end of life, at which point the entire alarm should be replaced.
What does the voice messaging system announce?
The voice messaging system on the P4010ACS announces functional messages such as Replace alarm at end of battery life and Hush mode activated when the Hush function is triggered.
What sensor does the P4010ACS use?
The P4010ACS uses a photoelectric sensor, which is effective at detecting slow-smoldering fires and produces fewer nuisance alarms from cooking compared to ionization sensors. Photoelectric sensors are widely recommended for bedrooms and areas near kitchens.
Does the P4010ACS support interconnect?
The P4010ACS as listed here does not feature interconnect. For a hardwired interconnect photoelectric model, consider the P12040 or the current DETECT-line 20SAR or 20SA10 models.
What model replaced the P4010ACS?
The P4010ACS has been replaced by the Kidde 20SA10, part of the DETECT line with enhanced photoelectric sensing, hardwired interconnect, and a 10-year sealed battery backup.
# Kidde AC Hardwired Photoelectric Smoke Alarm with 10-Year Sealed Battery Backup **Model:** `P4010ACS` **Brand:** Kidde **Category:** Smoke Alarm Hardwired > The Kidde P4010ACS is a 120V AC hardwired photoelectric smoke alarm with a 10-year sealed lithium battery backup, eliminating battery replacements for the life of the alarm. A voice messaging system announces end-of-life replacement reminders and Hush mode activation. An ambient light sensor adjusts LED brightness automatically. This model has been replaced by the Kidde 20SA10. ## Specifications | Attribute | Value | |---|---| | Product Type | Smoke Alarm | | Alarm Type | smoke | | Sensor Smoke | photoelectric | | Power Source | hardwired-ac | | Voltage | 120 | | Battery Backup | Yes | | Battery Type | 10-year sealed lithium | | Battery Replaceable | No | | Battery Life Years | 10 | | Voice Alerts | Yes | | Smart Wifi | No | | App Connected | No | | Ring Ecosystem | No | | Interconnect | No | | Interconnect Type | none | | Wire Free Rf | No | | Self Testing | No | | Hush Feature | Yes | | Smart Hush | No | | Strobe | No | | Egress Light | No | | Alarm Db | 85 | | Ul Smoke | UL 217 | | Warranty Years | 10 | ## What's Included - alarm unit (battery pre-installed) - wiring harness - mounting hardware - quick install guide Source: https://www.jaspecs.com/kidde/smoke-alarm-hardwired/p4010acs-kidde-ac-hardwired-photoelectric-smoke-alarm/