Hello Guys Could someone give some advise on what could be a problem with my networks. I have 3 networks (2 brisges) and having low communications problem connecting throw 5500cn or connecting local usb unit. Network 1 has 75 units (enough power) Network 2 has 54 units " " Network 3 has 25 units " " Cable lenghts are less than 600m Switches are mostly Saturn & DLTs Burden is active on unit 1 and clock is on another in just the current network trying to work in, but just seem to have slow or near to no communications with devices on network As you can see from the 1 picture(this was on local usb) have unit I can't transfer back to database. Some of the transfer get to 71% then fail. I have some units that will flash blue & Orange at me but when you look at the unit on the network power on the unit is up above 24v, but then other times the same switch is OK I have lights on sensors and sometimes when turning off they seem to not completely turn off but goto about 22%(not logic programmed yet) Also Some of the channels in the total network just on differrent networks can just turn on, have the pc on the network and nothing seems to be triggering those groups assigned to the channels that appears in the logs. I've even tried to plugged external burden in and removed from units and still the same thing. I have thermostat in the network and have dropped the communications down and time to max Does anyone have any ideas???? Thanks Kev