The Kidde 20SA10 is a hardwired DETECT-line smoke alarm with a 10-year sealed battery backup, eliminating battery replacements for the life of the alarm. Enhanced photoelectric sensing reduces cooking false alarms. Hardwired interconnect ensures whole-home coverage. Self-testing monitors alarm readiness continuously. Tested to UL 217 10th Edition (2024). At end of battery life, the alarm signals replacement rather than chirping at night. The twist-and-click mounting bracket simplifies installation.
Does the 20SA10 battery backup ever need replacement?
No. The 20SA10 has a 10-year sealed lithium battery backup that lasts the life of the alarm. At the end of 10 years, the alarm will chirp to signal it is time to replace the entire unit, eliminating surprise late-night low battery chirps.
Does the 20SA10 interconnect with other alarms?
Yes. The 20SA10 uses hardwired interconnect. When any connected Kidde alarm detects smoke, all interconnected alarms sound simultaneously. Up to 24 compatible devices (18 initiating) can be on the same circuit.
What standard does the 20SA10 meet?
The 20SA10 is listed to UL 217 10th Edition, which is the current (2024) smoke alarm standard with stricter nuisance alarm resistance requirements than earlier editions.
Does the 20SA10 have voice alerts?
No. The 20SA10 does not have voice alerts. For voice alerts with the same 10-year sealed battery and hardwired interconnect, choose the 20SA10-V instead.
What is the difference between the 20SA10 and the 20SA10-V?
The 20SA10 sounds 3 long beeps with a red LED flash when smoke is detected. The 20SA10-V adds crystal-clear voice alerts announcing "Fire!" to help occupants identify the emergency immediately. Both use the same 10-year sealed battery and hardwired interconnect.
# Kidde DETECT Smoke Alarm, Hardwired with 10-Year Backup Battery **Model:** `20SA10` **Brand:** Kidde **Category:** Smoke Alarm Hardwired > The Kidde 20SA10 is a hardwired DETECT-line smoke alarm with a 10-year sealed battery backup, eliminating battery replacements for the life of the alarm. Enhanced photoelectric sensing reduces cooking false alarms. Hardwired interconnect ensures whole-home coverage. Self-testing monitors alarm readiness continuously. Tested to UL 217 10th Edition (2024). At end of battery life, the alarm signals replacement rather than chirping at night. The twist-and-click mounting bracket simplifies installation. ## 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 | No | | Smart Wifi | No | | App Connected | No | | Ring Ecosystem | No | | Interconnect | Yes | | Interconnect Type | hardwired | | Wire Free Rf | No | | Max Interconnect Devices | 24 | | Max Initiating Devices | 18 | | Self Testing | Yes | | Hush Feature | No | | Smart Hush | No | | Strobe | No | | Egress Light | No | | Alarm Db | 85 | | Ul Smoke | UL 217 10th Edition | | Warranty Years | 10 | ## What's Included - alarm unit (battery pre-installed) - twist-and-click mounting bracket - wiring harness - quick install guide Source: https://www.jaspecs.com/kidde/smoke-alarm-hardwired/20sa10-kidde-detect-hardwired-10year-battery-smoke-alarm/