Just call Davis Technical Support... They sent me two at no charge when I thought my rain gauge was broken; however a good cleaning with air in a can was all that was needed.
There are a few buts,
- jwwd, like me are in Europe, it may cost a lot to call to US, also we should call in middle of the night to be on their "office-time".
- I don't think they send anything for free to Europe, like the SensComp-example, they wanted $120 for sending a little few-centimeter-sized sensor to Europe.
I called the Danish Importor of Lacross Stations here in Denmark (located here in Silkeborg) and he gave me a bunch of reed-switches for free. I just need to “un-solder” the reed-switch from the printboard.