LINOVISION Industrial 4 Ports Gigabit BT90W PoE Passthrough Switch and PoE Extender, IEEE802.3af/at/bt, Optional DC Power Supply, SFP Port, DIN Rail PoE Powed Switch Support 820ft Long Distance PoE

INDUSTRIAL PoE PASSTHROUGH SWITCH -Powerd by POE Switch or PoE Injector, passes PoE power to other PoE devices, such as VoIP phones and cameras. Also know as PoE Powed Switch. No local power adapter is required
4CH BT90W PoE EXTENDER - 1 x IEEE 802.3af/at/bt POE Input Port, max 90W; 4 x IEEE 802.3at/af/bt PoE output Ports , 90W max for each port; Total POE budget is 75W max (90W POE input) or 120W max (DC input). Also provides 1 * 1000BASE-X SFP port and 1 * Relay port.
OPTIONAL DC POWER SUPPLY - Dual DC48~57V redundant power inputs: Power 1 (Main), Power 2 (Backup)
820FT PoE EXTENSION- Extends PoE and Ethernet an additional 330ft (100 meters) at Gigabit speed or 820ft (250 meters) at 10Mbps in CCTV mode. Set the PoE Switch to CCTV mode through the DIP switch in the panel.
STANDARD PoE - Unlike some software emulated PoE, this PoE Extender adopts hardware IEEE802.3af/at/bt PoE chipset and compatible to both Mode A and Mode B PD device. It follows PD Detection -> Classisication Type -> Power On procedures to prevent stanard PD device from damaging.
INDUSTRIAL DESIGN - Fanless metal shell design; wide working temperature -4°F ~149 °F (-20°C~65°C ); DIN-rail/Wall mounted installation, 6kV surge immunity and 8kV ESD protection.
QUICK-PoE - PoE power supply immediately upon switch startup without waiting for switch system software control. This is unique features for many IoT devices that rely on non-interruption operation.

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