All i can say is apply the same logic to everything else in your home. Id like to know the ages of everything else. We dont say it needs to be replaced to do what you want for profit to us, your here posting no-one is making any money. You still have an old system none of us here would have in our homes. I moved into a house with ts 900 10 years ago. Its gone. I have a v2 hw 1070 now a 10270 due to firmware upgrades. When i cant upgrade firmware i get rid. This is the bit of kit i trust to protect my home and all around it (granted its linked to HA)