This Rachio Iro 16-Zone Wi-Fi Irrigation System drops from $199.99 to $109.99 today only at HomeDepot.com. Plus shipping is free. This is the lowest price we found by $40 (see Amazon where it has 4.7 out of 5 stars by 700+ reviewers!) It allows you to control your sprinkler system from your smartphone and installation is supposed to take less than 30 minutes. Sales tax is charged in most states.