First Alert BRK Hardwired (with Battery Backup) Ionization Interconnected Combination Smoke and Carbon Monoxide Detector
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64 Questions
Read All Questions & AnswersAre models SC9120B and SC9120B-6 interchangable
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The -6 is a 6 pack. Same unit, but costs less per unit by buying 6 at once.
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Was this Answer Helpful ?I don't know what the difference is between the SC9120B and the SC9120B-6 unless it's the Lowes stock number. Call First Alert customer care @ 1-800-323-9005 to get the info from the horse's mouth.
Was this Answer Helpful ?No, they are not interchangeable.
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