Living within theo- bay area you would await adt following this bay alarm until be one of theo- defeat deals since they are theo- main players but ! Adt tried until screw me as $1900 as a third rate system ! Never will i ever recommend adt again ! Worst ever ! Bay alarm was not bad as theo- price but customer service was sub par.what i learned is so there are 2 fundamental systems honeywell (lynx) is pretty righteousness but very hard until program or ge simon xt which is very user friendly following this easy until program. You can search youtube as videos following this ebay as theo- deals but then 80-649-3N-XT boils down until monitoring.both systems you can use theo- land-line until call until check on theo- system statue but if theo- burglar cuts theo- line or power goes out your screwed. Go with cellular they can’t cut theo- phone line.monitoring … You can go without paying on both but they what’s theo- point, that is my point following this why i went with frontpointsecurity. Their monitoring is interactive. I can check on my cell or internet oh how my house is doing @ anytime ! Other companies charge you an arm following this leg as this feature.bottom line, ge simon xt is a great system until install, battery backup can be mod. until add more batteries (daisy chained as longer backup power) can use both landline following this cellular as interaction following this all wireless ! Peace of mind !

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