MOXA's IKS-6728A-4GTXSFP-24-T managed PoE+ Ethernet switch from the IKS-6728A series features 8 built-in PoE+ T(X) ports and is designed to meet the demands of mission-critical applications for business and industry. Alarm contact channels - 1 relay output with current carrying capacity of 1 A at 24 VDC, 18 – 36 VDC operating voltage, and 24 VDC input voltage. -40 – 75 deg. C operating temperature