900-CUDR - Smoke detector KIDDE - Free user manual and instructions
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| Product Type | Smoke Detector |
| Power Source | 9V Battery (included) |
| Sensor Type | Photoelectric |
| Dimensions (H x D) | 4.8 x 5.1 inches (122 x 130 mm) |
| Weight (with battery) | 0.7 lb (320 g) |
| Battery Life | 1 year (replace annually) |
| Alarm Sound Level | 85 dB at 10 feet |
| Operating Temperature | 40°F to 100°F (4°C to 38°C) |
| Storage Temperature | -40°F to 140°F (-40°C to 60°C) |
| Humidity Range | 10% to 95% relative humidity (non-condensing) |
| Test Button | Yes (silence/test combined) |
| Hush Feature | Yes (temporarily silences nuisance alarms) |
| LED Indicator | Red LED flashes every 30-40 seconds (normal operation) |
| End-of-Life Warning | Chirps every 30 seconds after 10 years |
| Mounting | Ceiling or wall (included mounting bracket) |
| Compliance | UL Listed (UL 217) |
| Warranty | 10 years limited |
| Cleaning | Vacuum dust from vents monthly |
| Battery Replacement | Annually or when low battery chirp sounds |
| Unit Replacement | Every 10 years |
Frequently Asked Questions - 900-CUDR KIDDE
Where should I install the Kidde 900-CUDR smoke detector?
Install on the ceiling or high on a wall, at least 4 inches (10 cm) from corners. Don't install near kitchens, bathrooms, or windows.
How do I test the smoke alarm?
Press and hold the test button until the alarm sounds (3-5 seconds). It will beep loudly to confirm it's working.
Why is my smoke detector chirping every 30 seconds?
A chirp every 30 seconds usually indicates a low battery. Replace the 9V battery immediately. If chirping continues, it may signal end-of-life after 10 years.
How do I silence a false alarm?
Press the test/silence button to hush the alarm for about 8 minutes. The unit will reset after that. If false alarms persist, move the detector further from sources like cooking smoke.
What type of battery does the 900-CUDR use?
It uses a standard 9V alkaline battery. Always replace with the same type for best performance.
How often should I replace the batteries?
Replace the battery at least once a year, or when the low battery chirp starts. It's recommended to do it when changing clocks for daylight saving time.
How long does the smoke detector last?
The unit has a 10-year lifespan from the date of manufacture. Replace the entire alarm after 10 years, even if it appears to work.
Can the Kidde 900-CUDR detect carbon monoxide?
No, this model is a smoke detector only. It does not detect carbon monoxide (CO). For CO detection, install a separate CO alarm.
How do I clean the smoke detector?
Vacuum the vents gently with a soft brush attachment once a month to remove dust and debris that could affect performance.
What should I do if the alarm sounds continuously?
Treat any continuous alarm as a real emergency. Evacuate immediately and call 911. Do not re-enter until the situation is resolved.
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