HP J4817A PROCURVE SWITCH 2312 12 PORT NETWORK SWITCH | eBay
Allen-Bradley, 840-A1, 840 Automatic Float Switch, Style A - Industrial Switch, Low Operating Force, Convertable for Tank or Sump Operation, Type 1 Enclosure, Standard contacts | State Electric
Amazon.com: HP / Aruba FlexNetwork 5130 24G SFP 4SFP+ EI Switch - 24 Port Managed Ethernet Switch : Industrial & Scientific
HP 1920 Series 48-Port 370W Gigabit PoE+ Switch JG928A#ABA B&H
IES3110-24TF, 24-Port Gigabit Ethernet L2+ Managed Industrial Switch, 24 x 10/100/1000BASE-T, with 4 x 1Gb Combo, -40 to 75°C Operating Temperature - FS.com Europe