OEM Piaggio Keyless Device - 1D003778
For Piaggio 1
*Activation of this part requires the Piaggio Dealer Computer*
Given that the price of just this Keyless Device and the Keyless Device WITH Controller Module 1D003831 are nearly the same; we suspect most customers will opt to just replace the entire Controller and Keyless Device.
This .pdf document from the owners manual does a good job of explaining all Keyless device fuctions.