I am not happy MasterAlert System, big problem.. I try other, I unlike it,
I got new two CA-360 from Serene Innovations at
http://www.sereneinnovations.com/
I got two CA-360 master will work toghter, with Ca-LX for light flasher.. wow..beautifual green LED, day, dim LED is light, Night is dark LED, it is Automatic DIM, Shake is wow, I never before.. it is smart shake like ..|...||...|||...more |||||||.. lazy..they more |||||||||||||.. but my old |..|..|..| boored! go sleep, CA-360 is BETTER BETTER, I had CA-PX Pager it is beauttiful than old pager.. wow CA-360 support multi-door, multi-alert sound, multi-baby, wow never new deterion moniton, if use baby (CA-BX) AA battery 8-10 month, if "low-battery, they will send to CA-360 beep say "BATT" mean need buy new battery replace it, but old or other don't have low-send to Mater, CA-360 is BETTER !!! try it i love it also CA-360 have two shake bed if two bed ca-360 to one and other one bed, it is GREAT.. also if you buy Pager (Ca-PX) or SOS (CA-SX), if you have wife keep remote SOS, what happen accident press SOS.. send to clock system or page will flasher or shake.. CA-360 is GREAT!! you look website
http://www.sereneinnovations.com/ they are very smart!!