Hi,

    I am wondering if it is possible/safe to supplement a single, mains (electricity) powered smoke alarm with a battery powered smoke alarm in another room. I have read that it is unsafe to mix two mains-powered smoke alarms and just want to check that it is safe to mix one mains-powered & one battery-powered smoke alarm. Thanks!

The reason it is not a good idea to mix brands of mains smoke alarms is the interlink connection, most smoke alarms can not safely interlink to another brand (Some will just Not work). So a battery operated smoke alarm is better than nothing, BUT it can not be interlinked, which in turn defeats the point of having interlinked smoke alarms.

If the property is in Scotland or Wales you have to have interlinked smoke alarms. Safelincs supply a variety of smoke alarms Click here