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eufy Security Smoke and CO Alarm Listener alerts you if your existing smoke or carbon monoxide detectors sound their alarms. This device does not detect fire, smoke, or carbon monoxide and is intended to work with UL listed smoke and CO detectors that are less than 10 years old. Easy to install without the need for tools or professional installation. Requires homebase to operate. Compatible with HomeBase S380 and S280. One App Controls All. Links to HomeBase and the eufy Security app. Easily get notifications and check the battery status. Battery life of up to 2 years. Battery are replaceable.

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