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    20 Port Full Gigabit Unmanaged Industrial Switch, Rack Mount

    $924.00
    Affordable 20 ports Gigabit Ethernet switch, 4 Gigabit SFP ports + 16 Gigabit RJ45 ports, unmanaged plug-and-play, support full/half duplex mode, wide range of DC 110-370V / AC 85-264V isolate power inputs, backplane bandwidth up to 40Gbps, ideal for applications that require high bandwidth and long distance communication.
    SKU: ATO-GE3020G
    Free Shipping Worldwide
    Delivery date: 6-12 days

    Fanless IP40 rated 20 ports Layer 2 full Gigabit industrial switchs, operating temperature range is -40 to 70° C to satisfy any special needs of industrial automation, outdoor applications and harsh weather conditions.

    Specification

    Model ATO-GE3020G
    Technical Parameters
    Protocol Standard IEEE802.3 (Ethernet), IEEE802.3u (100Base-TX&100Base-FX), IEEE802.3x (Flow control), IEEE802.3ab (1000Base-T), IEEE802.3z (1000Base-LX), 802.1az, 802.1ab
    Switch Capability
    MAC Table Size 16k
    Backplane Bandwidth 40Gbps
    Switch Delay <5μs
    Interface
    Gigabit Ports Number: 20
    Connector: 4 Gigabit SFP ports + 16 Gigabit RJ45 ports
    Baud rate: 1000Base-LX (Optical port), Self-adaption 10/100/1000MBase-TX
    Terminal Block for Power Input     5.08mm terminal block
    Terminal Block for Relay Alarm 5.08mm terminal block, 1A@24VDC
    Communication Distance
    Twisted-pair 100m (CAT5/CAT5e cable)
    Multi-mode Fiber Gigabit multi-mode: 850nm, 500m
    Single mode Fiber Gigabit single-mode: 1310nm, 20km
    LED Indicator Lights
    Front Panel LED Lights Port light: LINK/ACT, SPEED
    System work light: SYSTEM
    Power status light: POWER
    Power
    Input Power AC/DC 110v 120v 220v 230v 240v (85-264VAC/110-370VDC) single isolate power supply
    Power Consumption <15W@(MAX)
    Overload Protection support
    Inversed Protection support
    Redundancy Protection support
    Working Environment
    Operating Temperature -40°C~70°C
    Storage Temperature -40°C~85°C
    Ambient Humidity 5%~95%
    Physical Characteristics
    Shell IP40 protection, aluminum alloy shell
    Installation Standard 19-inch rack mounting
    Dimension 482.6mm × 44mm × 315mm (W×H×D)
    Weight 3.8kg
    Industry Standard
    EMC EN61000-4-2(ESD), Level 4
    EN61000-4-3(RS), Level 4
    EN61000-4-4(EFT), Level 4
    EN61000-4-5(Surge), Level 4
    EN61000-4-6(CS), Level 4
    EN61000-4-8, Level 5
    Impact IEC60068–2-27
    Falling IEC60068-2-32
    Shock IEC60068-2-6

    Dimensional Drawing (mm)

    20 port Gigabit unmanaged industrial switch GE3020G dimension

    Tips: Half-duplex and full-duplex
    Half-duplex means that the sending and receiving of the same media is asynchronous. In contrast, full duplex has separate transmit and receive paths. Full-duplex links are the key to extending Fast Ethernet (100Mbps). A full-duplex link network segment cannot exceed two devices, and can be a network card or switch port.
    10BASE-T and 10BASE-FL have separate transmit and receive paths, and full duplex can be performed depending on the complexity of the network card or switch port. If these interfaces are configured in half-duplex mode, the synchronous detection of receiving and transmitting will trigger the collision detection. The same interface is set to full duplex, and collision detection is disabled because full duplex does not follow the shared CSMA/CD rules.
    As mentioned above, the network range at 100 Mbps has been reduced due to collisions. For twisted pair segments and switch ports, the longest distance of the segment is 100 meters (within the collision domain). The problem is that on fiber ports, for multimode fiber, the length of the network segment is 2 kilometers. For single mode fiber, it is 15 kilometers. In the half-duplex mode, it is limited by the collision domain, and the network segment distance is 412 meters. Therefore, only in full-duplex mode (CSMA/CA is ignored), the extension of the fiber segment can reach its limit.

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