So love the two systems we have now. However...
Please, please, please add a "No alarm - sms / email alert only" for the water (and temp, I assume) sensors.
We have some people living here the have medical issues with high pitched sounds. For a fire or break in, that is fine -- its an emergency. But a water sensor trigger is something where we should/must have a choice...in our case email/text is perfect...the alarm can leave them dizzy for weeks.