The Kidde 900-CUDR is a battery-powered (2 AA included) combination smoke and carbon monoxide alarm with self-testing components that continuously verify the alarm is functioning. The photoelectric smoke sensor may detect visible fire particles from slow smoldering fires sooner than ionization sensors. An included mounting bracket supports installation in 4 orientations. Battery-powered protection continues even during power outages. This model is replaced by the 30CUDR.
What does self-testing mean on the 900-CUDR?
Self-testing means internal components continuously monitor whether the alarm is operating correctly between manual button tests. If a fault is detected, the alarm signals an error. Note: self-testing is not a substitute for weekly manual button tests.
What model replaces the 900-CUDR?
Kidde recommends upgrading to the 30CUDR, which is the current-generation DETECT battery combo alarm with enhanced sensing technology and updated UL 217 certification.
# Kidde Battery Powered Smoke and Carbon Monoxide Alarm with Self-Testing **Model:** `900-CUDR` **Brand:** Kidde **Category:** Combo Alarm Battery > The Kidde 900-CUDR is a battery-powered (2 AA included) combination smoke and carbon monoxide alarm with self-testing components that continuously verify the alarm is functioning. The photoelectric smoke sensor may detect visible fire particles from slow smoldering fires sooner than ionization sensors. An included mounting bracket supports installation in 4 orientations. Battery-powered protection continues even during power outages. This model is replaced by the 30CUDR. ## Specifications | Attribute | Value | |---|---| | Product Type | Combination Smoke + CO Alarm | | Alarm Type | combo | | Sensor Smoke | photoelectric | | Sensor Co | electrochemical | | Power Source | battery-aa | | Battery Backup | No | | Battery Type | AA | | Battery Count | 2 | | Battery Replaceable | Yes | | Voice Alerts | No | | Voice Messages | | | Smart Wifi | No | | App Connected | No | | Ring Ecosystem | No | | Interconnect | No | | Interconnect Type | none | | Wire Free Rf | No | | Self Testing | Yes | | Hush Feature | Yes | | Smart Hush | No | | Peak Level Memory | No | | Digital Display | No | | Low Level Co Alert | No | | Explosive Gas Detection | No | | Indoor Air Quality | No | | Strobe | No | | Egress Light | No | | Alarm Db | 85 | | Ul Smoke | UL 217 | | Ul Co | UL 2034 | | Warranty Years | 10 | ## What's Included - alarm unit - 2 AA batteries - mounting bracket - mounting hardware Source: https://www.jaspecs.com/kidde/combo-alarm-battery/900-cudr-kidde-self-testing-battery-combo-alarm/