Kidde 20SDR‑CA DETECT Battery Powered Smoke Alarm
MFR Part #:KD21031451
- 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
Comprehensively tested and designed to UL/ULC standards for safety and reliability, this Kidde alarm is powered by 2 AA replaceable batteries (included) for continual detection even during outages. Plus, it's self-testing and easy to install with the included twist-and-click mounting bracket.
Kidde 20SDR-CA Detect Smoke Alarm: Professional-Grade Fire Protection for Your Family
The Kidde 20SDR‑CA smoke alarm is a battery‑powered photoelectric smoke detector designed for residential fire detection with reduced nuisance alarms. It provides continuous protection, even during power outages, with self-testing functionality and clear visual and audible alerts.
Reliable Protection That Never Sleeps — Even During Power Outages
Safety shouldn't depend on your home’s electrical grid. Unlike hardwired units that can fail during a storm, this AA battery-powered alarm keeps a constant watch over your living spaces 24/7.
- Photoelectric Precision: Optimized to detect slow, smoldering fires—the most common type of residential fire—faster than traditional ionization alarms.
- Smart Tech, Fewer Fails: The "Detect" technology is specifically designed to recognize the difference between a real emergency and standard kitchen steam or smoke.
- Self-Testing Assurance: Every Kidde Detect unit performs internal component checks automatically, so you don’t have to guess if your protection is still active.
No Electrician? No Problem. Install It in Minutes.
Most homeowners think they need a professional to upgrade their fire safety. The Kidde 20SDR-CA proves them wrong. We’ve designed this unit for the weekend warrior who values their time and their budget.
- The Twist-and-Click System: Our simplified mounting bracket allows you to secure the alarm to any ceiling or wall with basic household tools. No wiring, no wire nuts, and no risk of electrical shock.
- Everything is in the Box: We include the 2 AA batteries you need to get started immediately. From unboxing to "System Active," the process takes less than five minutes.
- Universal Fit: Its modern, low-profile design fits seamlessly into bedrooms, hallways, and living rooms without being an eyesore.
Smart Safety for Modern Homes
The Kidde 20SDR-CA is more than just a smoke detector; it’s a 10-year investment in your family’s security. Certified to both UL and ULC standards, this Canadian-certified model meets all provincial building code requirements for battery-operated alarms.
It features a 10-year sensor life, meaning you won't need to replace the entire unit for a decade. When it finally reaches the end of its lifespan, a distinct end-of-life signal will let you know it’s time for an upgrade. Until then, you enjoy a loud 85-decibel alarm and a bright LED visual indicator that ensures everyone in the house is alerted the moment smoke is detected.
- Kidde Battery-Operated Smoke Alarm with 2 AA Batteries
Photoelectric Smoke Sensor → Reliable detection of smoldering fires
Detects visible smoke particles associated with slow, smoldering fires for early warning.
Reduced Nuisance Alarm Technology → Fewer false alarms
Enhanced sensing technology helps minimize alarms triggered by cooking.
2 AA Battery Operation (Included) → Continuous protection during outages
Runs independently of electrical wiring, ensuring operation even when power is lost.
Self-Testing Function → Ongoing performance assurance
Internal components continuously check the alarm’s functionality for reliable operation.
85 dB Audible Alarm → Clear and immediate warning
High-decibel alert ensures occupants are notified of potential fire hazards.
Multi-Color LED Indicators → Easy status identification
- Red: Active alarm and alarm memory
- Amber: Faults and low battery
- Green: Standby operation
Hush™ Feature → Temporary silencing of nuisance alarms
Silences the alarm for approximately 8–10 minutes during non-emergency conditions.
End-of-Life Notification → Timely replacement reminder
Alerts users when the unit reaches its 10-year lifespan.
Twist-and-Click Mounting → Quick installation
Simple mounting bracket allows fast setup on walls or ceilings.
Specification
Details
Model
20SDR‑CA
Sensor Type
Photoelectric
Power Source
2 AA replaceable batteries
Audible Alarm
85 dB at 10 ft
Temperature Range
4.4°C to 37.8°C (40°F to 100°F)
Humidity Range
Up to 95% RH (non-condensing)
Dimensions
12.7 × 5.1 × 12.7 cm
Weight
0.38 kg
Interconnect
No
Wiring
Not required
Warranty
10-year limited warranty (batteries excluded)
Standards Compliance
ULC 531, UL 217, NFPA 72, NFPA 101
Replacement Batteries
Energizer E91, Gold Peak 15A, Golden Power GLR6A (Lithium not supported)
Residential homes
Suitable for installation on every level and in sleeping areas.
Apartments and condos
Battery operation enables use without hardwired connections.
Backup detection during power outages
Maintains functionality when electrical systems are down.
Areas prone to nuisance alarms (e.g., kitchens nearby)
Enhanced sensing reduces false alarms caused by cooking.
Works With:
- Standard AA alkaline batteries (approved models only)
- Wall or ceiling mounting surfaces following installation guidelines
Not Compatible With:
- Lithium batteries
- Interconnected alarm systems
- Hardwired electrical systems
What type of sensor does the Kidde 20SDR‑CA use?
The Kidde 20SDR‑CA uses a photoelectric sensor designed to detect visible smoke particles from smoldering fires.
Does this smoke alarm require wiring?
No. It is fully battery-operated using 2 AA batteries, so no electrical wiring is required.
How does the Kidde 20SDR‑CA reduce false alarms?
It uses enhanced sensing technology specifically designed to reduce nuisance alarms caused by cooking.
How long does the alarm last before replacement?
The unit provides end-of-life notification and should be replaced 10 years after it is powered.
Can the alarm be temporarily silenced?
Yes. The built-in Hush™ feature silences nuisance alarms for approximately 8–10 minutes.
Where should I install this alarm?
For maximum protection, install an alarm on every level of your home, inside every bedroom, and outside every sleeping area. Avoid placing it directly next to bathrooms with showers to prevent steam interference.
How often should I test the unit?
Kidde recommends testing the alarm weekly by pressing the Test/Hush button. Batteries should be replaced every 6 months to ensure peak performance.
Will this detect Carbon Monoxide?
No, this model is a dedicated smoke alarm. For total protection, we recommend pairing this with a Kidde Detect Carbon Monoxide alarm in the same hallways.