NIB Universal 3 in 1, Smoke & Carbon Monoxide Alarm with Voice Alarm

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Universal 10-Year Battery Combo Smoke+Carbon Monoxide Detector Voice Alarm

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Universal Security Instruments. 3 in 1 combo Smoke, fire & carbon monoxide alarm

USI 10-Year Battery 3-in-1 Smoke Fire and Carbon Monoxide Detector w/Voice Alarm

Universal Security Instruments Hardwired Smoke & Carbon Monoxide Detector