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This guide is for homeowners and installers using the Kidde KF20 smoke alarm, designed to replace older Kidde models. The KF20 provides reliable smoke detection with battery backup, ensuring continuous protection even during power outages. Note that while it replaces many models, some require professional electrical work for interlinking. This guide provides essential information for setup, use, and maintenance.
| Model Part Number | KF20 |
|---|---|
| Brand | KIDDE |
Press and hold the Test/Hush button on the smoke alarm. The alarm should sound.
Test the smoke alarm monthly.
Press the Test/Hush button to silence the alarm. The alarm will typically be silenced for a few minutes.
The KF20 uses a 9V alkaline battery for backup power.
Replace the battery annually or when the low battery warning chirps.
The KF20 comes with a six-year manufacturer's warranty.
Yes, if you are replacing a compatible model and are comfortable with electrical work. However, some models require professional installation.
The Kidde KF20 is CE and Kitemarked to BS EN 14604:2005 standards and complies with 2022 Scottish legislation.
Replace the 9V battery or silence the low battery warning for 8 hours by pressing the Test/Hush button.
Press the Test/Hush button to silence the alarm. Check for smoke or other triggers. If the issue persists, the unit may be faulty and need replacing.
Check the power supply and wiring. Ensure the battery is correctly installed. If problems persist, replace the alarm.
Verify the interlink wiring is correct and compatible with the KF20. Check that all alarms are powered and functioning.
The Kidde KF20 is compatible with the following models: KF1, 4870, 4881, 1240C, and IAR230C. It can be electrically interlinked with many older Kidde models. However, the 123i / 1239HI, 1275H, KF1R, and KF10R models require professional electrical installation.
