7345.439 is the new upgraded rain sensor for the Davis VP2. It is more accurate, and durable than the previous tipping mechanism
Note that this is the 0.2mm increment part and cannot be adapted to 0.01". Please contact us if you need the 0.01" part. This is also the part with the longer 40' cable for fitting to a standalone Davis rain gauge.The same part with the shorter cable for fitting to a VP2 ISS is also available.
These replacement tipping spoon mechanisms are backwards compatible with all previous VP2 rain collectors. The previous mechanism can easily be removed and the new one slotted in. For fitting instructions see:: https://www.youtube.com/watch?v=EiipHSWhA-8