Monitors Fortinet FortiSwitch hardware health over SNMP, beyond the usual interface, PoE and uptime coverage. Sensors are discovered per unit from the live sensor tables, so fanless, PSU-less and non-fiber models are handled correctly.
Includes the following checks:

CPU utilization
Memory usage
Chassis temperature
PSU state
Fan (state and speed)
SFP optical diagnostics (RX/TX power, temperature, voltage, bias)

Version history:

1.2.0: removed the duplicated word from PSU, fan and SFP service names
1.1.0: added SFP optical diagnostics (DOM)
1.0.1: hardened fan failure handling and discovery
1.0.0: initial release, CPU, memory, temperature, PSU and fan checks