* 4GE+2SFP Fiber Uplink Industrial PoE Switch with 4Port PoE
*Buffer reaches 4Mbit, Support 4K high-definition video transmission
* Supports smart watchdog function to monitor compliant PD
* Support 250meters Long-Range PoE
* Port 1-2 Support 24V/48V PoE by auto detect,Port 3-4 Support 802.3BT 60W
*Support fast ring ,support 30 pcs switches Max. in a cascade system ,Self-healing in 20ms Min
*Industrial Level 4 protection(ESD,RS,EFT,CS);
*-40℃~80℃ working temperature
*IEEE802.3af (15.4W) and IEEE802.3at (30W)
* DC Input 37-57V