sorry for last post mess up. here it is clear:
i am going down this thread fro the top so hope I am not repeating anything others have already said further down.....
yes, ds7000 sends all lites on/all lites off - on its house code 1x per sec or so when triggers. that what you mean?
I was going to ask if you ever looked at what house code your security devices are on? it doesnt matter to the ds7000 as it uses the 32bit data instead, but I recall years ago you can edit a sec device, change it to a non sec device to see what house code it is on, change it if u want, then change it back to the sec code. that said, could your random stuff be sec devices on B house code that normally means nothing, but what if they send their normal 60 min on/off report in at same time as something else sends so they clash; perhaps the 32bit sig gets gobbled up and its 16bit house code goes thru instead?