Is this a compatible model for Firex i4618AC
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Hi Arnie, thank you for your question. The NFPA prohibits the connection of alarms from different manufacturers without special testing, unless the model is listed as being Compatible we would not recommend interconnecting. We do not test our alarms with other manufacturer’s alarms. We are not able to confirm hardwired Interconnect compatibility between First Alert alarms and other brands. - Maria
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