Kidde Hardwired Smoke Alarm with AA Battery Backup - 21033081

Kidde Hardwired Smoke Alarm with AA Battery Backup - 21033081

Restore portable battery power with this universal/spec-match Kidde Hardwired Smoke Alarm with AA Battery Backup. This part provides the specified replaceable battery supply for compatible controls, alarms, tools, or accessories.

21033081 is a universal/spec-match Kidde item selected by its verified size, rating, connection, or application rather than appearance alone. Match the service requirements before ordering.

Is it time to replace?

• Common Symptoms: Device has low/no battery power, low-battery warning is active, or batteries are depleted/expired.
• Visible/Sensory Cues: Low measured voltage, leakage/corrosion, swelling, expired cells, or device operation returning when fresh cells are installed.

Pro Tip: Match battery size/chemistry and polarity, replace mixed-age cells as a set, and clean corrosion safely before installing new batteries.

Technical Specifications