October 14, 201312 yr comment_5785 Is it possible to buy a battery operated smoke alarm that will link up to a mains one already installed so if one goes off it relays to the other to go off . If so where can i get this product Report
October 14, 201312 yr comment_5787 Hi Michael If its an Ei Electronics/Aico system you can extend by adding an Ei168 RF base to one of the mains powered alarms and then install the 10 year battery powered Ei600TYCRF smoke alarms as the extension unit. Harry Report
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