Moxa switches are fairly low cost, and have a good temperature rating. The 2 series is considered light commercial. The 3 series has better thermal ratings for industrial applications. The 4 series is a managed switch with intelligence that can integrate with SCADA, talking ethernet IP, Profinet, or Modbus. The 5 series and higher are managed switches with good variety of capabilities to support POE, and fiber at 10/100/1GB speeds.