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The SimpliSafe SSSD3 White Smoke Detector Fire Alarm is a reliable and modern home security device that operates on a battery power source. It features smart home compatibility with Amazon Alexa, allowing for convenient voice commands and notifications. The white color design adds a sleek and clean look to any home while providing peace of mind in the event of a fire emergency. This used smoke alarm model from SimpliSafe is a practical and efficient choice for safeguarding your home and loved ones.