I'd suggest it's past it. But if you want to keep it I'd bridge the Reed and use the external connections only. But as its the oldest electronic thing in your house it must be time to upgrade or if your not fussed just decommission it
You ought to look into wireless polling etc not just assume a signal will make it. The rf environment is way different now than when that was considered good
also your z4 tamper is that. Its the last signal the panel recieved it is waiting for a tamper restore to clear it. Turning the battery off will ensure it cant send any signals