Looking for data, either anecdotal or actual measurements, on the latency and response time of sensors in the following configuration:
Hard-wired door closure contact --> Honeywell Vista128 alarm system --> AlarmDecoder rs232 serial device --> OpenHAB server.
Assume all items are optimized and the OpenHAB server is running on a dedicated fast computer, i.e Intel Core i5 / 4GB Ram / SSD on SATA bus.
When a contact changes state from open to closed, how long is it before the OpenHAB server sees the state change? 10 milliseconds? 100ms? 250ms or more?
Thanks for your detailed replies.