No, the components will go bad , ours lasted about 6 months in normal operations ,
Yes it will work with lawns, just be careful not to run over it with your lawn mower :-D When you set up the probe you can tell it what type of plant is being monitored as well as the soil type. There are options for different types of lawn grasses such as Tall Fescue, Red Fescue, Kentucky Bluegrass, Perenial Ryegrass, Zoysia, St. Augustine, etc. A lot of lawns tend to be a mix and there are no options I could find for lawn mixes. If you don't have a monostand of only one variety such as all Tall Fescues in your lawn then you might want to go with the predominate type of grass in your mix. If you don't know what type of grass you have look for what's common in your area. For example in the south St Augustine and Bermudagrass are common. In the Northeast it's fescues, bluegrass and perennial ryegrass.