On Fri, Mar 2, 2012 at 10:33 AM, YES NOPE9 wrote: > Use cellular technology as a backup...... > there are lots of modules available. > I can can supply more information if you care to see it. How is the cell network handled? I'd like to drop our landline, and the alarm system is one of the things holding me back. Could I use a cheap prepaid SIM or do I need to go through the monitoring company? --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .