I am moving to Surety. I have a DSC PowerSeries 1832 and am planning to buy the SEM300-PS-VZ to adapt it.
I see a whole bunch on ebay at very affordable prices - other than the risk of a defective unit, is there a reason I should not buy from them? I’ll make sure I can return if I can’t register it (i.e. IMEI number is in use by someone else).