All right. I'm ready for a heated debate. I've done my research. I've been involved with the beta testing of this new Smart Controller for the last 8 months. I was the first in Oregon to install one of the new 2009 units (just hitting store shelves next week). We have installed a few of these new units now. I've been through a few sessions of training on these. I'm pretty comfortable understanding how this system works in comparison with the competion's smart controllers. I am more than convinced this is the best E.T. product anyone has ever come out with (for residential irrigation systems). I am ready for the debate. Bring it on, boys! What's your questions and critiques? Just to give a very basic overview of how this new SMT controller works; You install a mini weather station mounted near the gutter line or roof line of the house. This unit measures ACTUAL RAINFALL. It is not a rain sensor. It has tipping bucket inside to measure rainfall precisely. It has a temperature sensor. It keeps track of high and low temperature every day. With those on-site measurements, it adds those to other historical E.T. data based on a zip code. You enter the zip code of the location and then the unit instantly knows the historical values for the last 10 years - by month - of relative humidity, wind speed, and solar radiation. You further perfect this by entering in more details like elevation if you want. Next, you enter in every detail about each zone in the landscape. You tell the controller what type of plants you have or which type of turfgrass you have in that zone. You tell the controller how much sun it gets (e.g. full sun, 75% sun, 50% sun, 25% sun, full shade), you tell the controller what type of soil you have (6 types available), you tell the controller how dense the plantings are, whether they are established or new. There is an option to set a temporary watering-in time for zones that have newly planted lawns or shrubs or trees and then after 15 or 30 or 90 days the system reverts to weather-based control. You enter in several other factors like slope, etc. Once you're all done programming the system (the first time you'll really need to read the manual and it will take you a good 30 minutes or more to program. After you've done a few, you can actually program all of this very quickly. Last week, I did one 8-zone system in less than 15 minutes. It gets very easy once you understand it all) then the system takes over and operates as a COMPLETE weather-based system. What I mean by complete is it doesn't just turn on or shut-off your set times like other E.T. units do. It actually adjusts your time up and down on each zone, as needed - every day! So day one it may water all zones. Maybe it's hot outside and so the zone 1 (lawn) gets 10 minutes that day and zone 2 (plants) get 5 minutes of watering that day. Zone 3 (Vegitable Garden) gets 7 minutes at 5:00 a.m. and another 2 minutes at 8:00 am. And so on..... Maybe tuesday is a little cooler so zone 1 (lawn) only gets 2 minutes that day. And zone 2 gets nothing. While the garden (zone 3) gets only 3 minutes. It adjust up and down -- or off -- with every zone, every day - all depending on current weather conditions. Just as an example, I have a 12 zone system at my house. On Monday, it watered only my front lawn and my garden that day. AND it adjusted the minutes those zones ran for. AND since my front lawn is at a 4 degree slope, it created a cycle/soak and ran 2 different times. The next day, the system did something totally different. It watered some of the same zones and still others didn't need water yet. It adjusted my times. Installed cycle/soak where needed, etc. It's a pretty slick system. Way more than I can go into right now as far as it's functions. But I haven't seen a unit that goes this far and takes this many factors into account AND automatically adjusts each zone up and down or off every day according to conditions. Incidentally, it's also scored higher on the SWAT tests than most all of the other E.T. based units in it's price range. Price point is pretty good too. I think the list price is for them is $425 for an indoor unit. That means most irrigation contractors should be paying around $200-$250 for this unit, including the weather sensor. That's not that much more than what the total list price is for a ESP-Mi and Rain Sensor / Combo. You'd typically pay $100 or so for a ESP-Mi and Rain Sensor combo. Now you'll pay a little more than $100 more for this unit but you will save your customer a LOT of unnecessary watering. On the inside, the unit is just like an ESP-M. Up to 13 stations. Weather sensor hooks up to a different connection though. But all the other wiring is the same as usual. And one of the coolest things is that there is a RETRO-KIT available. So you can just order a retro kit for like $175.00 or something and just switch out the faceplate on an existing ESP-M controller. Then, of course, you add the weather sensor. So I am ready for all you nay-sayers. Go ahead pile on. Tell me all about why you think the E.T. system your favorite brand makes and why you think it's better. I'm ready for that debate.... But first, Here is a website about the unit; http://www.rainbirdespsmt.com/ And here are some photos; .