From someone I know who does SCADA for a living: If I understand the scenario, then I would recommend wireless IO radios manufactured by Phoenix Contact.
-They are small -Easy to configure -Reliable I have them installed at several customer sites and have not had to follow up with any service calls whatsoever. The only disadvantage is that they are a little pricey, but you get what you pay for. I would strongly suggest protecting the transceiver from the power source and installing interposing relays on the I/O points. A little bit of surge protection and isolation can save a lot of heart ache and money. Let me know if you need any additional help. Jeremy Parr wrote: > I have a project that requires turning a remote relay on and off, over > the distance of about a mile. I'd like dry contacts at either end. > Would a SCADA product do this? No need for anything serial or > ethernet, just need to switch a relay on and off. > > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: [email protected] > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.392 / Virus Database: 270.13.45/2285 - Release Date: 08/06/09 > 05:57:00 > > -- Scott Reed Sr. Systems Engineer GAB Midwest 1-800-363-1544 x4000 Cell: 260-273-7239 -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: [email protected] Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
