Kidde 20SAR-CA Hardwired Smoke Alarm with 2 AA Backup Batteries
MFR Part #:20SAR-CA
- Alarm Type :Audible
- Audible Alert :85 dB
- Color :White
- Dimensions :12.7 cm Dia x 5.1 cm H
- Humidity Rating :10 to 95%
- Manufacturer Name :Kidde
The Kidde 20SAR-CA smoke alarm is a hardwired (120V AC) residential smoke detector with battery backup, designed for continuous fire detection even during power outages. It features interconnect capability and photoelectric sensing for reliable, whole-home coverage.
- Kidde Hardwired Smoke Alarm with 2 AA Backup Batteries
120V AC Power with 2 AA Backup Batteries → Ensures continuous operation during power outages for uninterrupted protection
Photoelectric Smoke Sensor → Detects visible smoke particles (smoldering fires) while reducing nuisance alarms from cooking
Interconnected Alarm System (Kidde 20SAR-CA) → When one alarm sounds, all connected units activate, improving response time across the home
Self-Testing Functionality → Automatically monitors internal components to verify proper operation
HUSH™ Feature → Temporarily silences nuisance alarms for 8–10 minutes without disabling protection
End-of-Life Notification → Alerts users when the unit reaches its 10-year replacement period
85 dB Alarm Output → Loud audible alert ensures occupants are notified clearly throughout the space
Multi-Color LED Indicators → Provides clear visual status for power, alarm, memory, and fault conditions
Twist-and-Click Mounting Bracket → Simplifies installation and reduces setup time
Specification
Details
Model
20SAR-CA
Power Source
120V AC, 60 Hz with 2 AA battery backup
Sensor Type
Photoelectric
Audio Output
85 dB at 3 m (10 ft)
Interconnect Capacity
Up to 24 Kidde devices (max 18 initiating devices, 12 smoke alarms)
Wiring
AC wiring with plug-in quick connector
Operating Temperature
4.4°C to 37.8°C (40°F to 100°F)
Humidity Range
Up to 95% RH (non-condensing)
Dimensions
12.7 cm x 12.7 cm x 5.1 cm
Weight
0.39 kg
Surge Protection
Meets ULC 531 20kV surge test
Warranty
10-year limited warranty (batteries excluded)
Battery Type
2 AA (Energizer E91, Gold Peak 15A, Golden Power GLR6A)
Certification Standards
ULC 531, UL 217, NFPA 72, NFPA 101
Residential homes (single and multi-level) → Interconnect capability ensures full-home alert coverage
Bedrooms and sleeping areas → Audible 85 dB alarm supports nighttime detection
Hallways and living spaces → Reduced nuisance alarms make it suitable near kitchens
Renovations or new construction → Hardwired installation supports code-compliant setups
Whole-home safety systems → Integrates with multiple interconnected alarms for comprehensive coverage
Compatible with:
- Kidde interconnected alarms (smoke, CO, and combination units)
- Up to 24 Kidde devices in a single interconnect system
Not compatible with:
- Non-Kidde alarm brands (unless explicitly specified)
Additional notes:
- Can receive and transmit CO alarm signals from interconnected CO or combo alarms
- Requires connection to a continuous (non-switched) AC power line
- Installation must follow local electrical codes and guidelines
Does the Kidde 20SAR-CA work during power outages?
Yes. The unit is powered by 120V AC but includes 2 AA backup batteries to maintain operation during power interruptions.
Can multiple Kidde 20SAR-CA alarms be connected together?
Yes. This model supports interconnection with up to 24 Kidde devices, so when one alarm activates, all connected alarms sound.
What type of fires does this smoke alarm detect?
It uses a photoelectric sensor, which is effective at detecting visible smoke from smoldering fires and helps reduce nuisance alarms from cooking.
How do I silence a false alarm?
Use the built-in HUSH™ feature, which temporarily silences the alarm for approximately 8–10 minutes before automatically resetting.
When should the Kidde 20SAR-CA be replaced?
The alarm includes an end-of-life notification that indicates replacement is required 10 years after the unit is powered.