DeviceWatch polls switches, routers, firewalls, access points and servers over plain SNMP -- no agents, no collector, no cloud account. It watches reachability, every interface, traffic, errors, CPU, memory, disk, temperature, fans and power supplies. On-device AI (no language model, nothing leaves the machine) builds a per-interface traffic baseline, learns which alarms an operator dismisses so it stops emailing the noise, and forecasts when a disk or link will run out of room. Vendor thresholds are read the way each manufacturer actually publishes them. 30-day free trial, then one licence covers up to 250 devices on macOS, Windows and Linux.