Good designs can be in production for a long time, and continue to earn revenue many years after they are completed.
As technology changes however, it may be prudent for a client to upgrade an existing product with new technology.
As a client and owner of a successfull product, we advise you to take advantage of some of the following changes in technology:
- Energy efficient devices
- New developments in communication technology, eg Bluetooth, WIFI, MIWI, OOK, LORA,
- Security: an encrypted devuce or an AES add on to ensure encryption
- Legal compliance to enter a new market - enviromental regulations, etc
Notwithstanding the above, you may want to add new operational features, ie. software upgrades that improve user friendliness and make the product better or easier to use.