Eton ARC Zone Guard Module lets you stay alert in every room. This add on wireless module works with the Eton Arc ZoneGuard Radio base unit Campmor Item 69208 to make sure you're in the know throughout your home. Alert warnings blare on every unit, to keep everyone aware and informed. Simply turn on the ZoneGuard base unit and place the wireless AAA battery powered module anywhere. Connect unlimited number of modules to ZoneGuard Base unit. Storm and emergency preparedness for your home. Stay safe and informed, in every room of your home. Wireless module works with the Eton Arc ZoneGuard Base Unit Campmor Item 69208 to make sure you're alerted, in any room in your home. Powered by AAA batteries. Connect an unlimited number of modules to the ZoneGuard Base Unit.