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Mikrotik Smart Power Injector and Advanced Software Controlled Repeater with 2x Gigabit Ports and 1x SFP Port



The GPEN21 is a smart power injector that serves as an advanced software-controlled repeater. Not only can it power your uplink devices via PoE, it can also provide a range of useful software features:

  • Interface management and monitoring
  • GPEN link fault detection
  • VLAN support
  • SNMP reporting
  • Basic traffic shaping

GPEN21 has an Ethernet and SFP port for fiber connectivity. Customers can choose to use GPEN21 to power optical module for uplink to provider, or to provide PoE to power Ethernet uplink to provider (that uses our GPeR and/or netPower products) The GPEN unit can be securely attached to a wall or the communications cabinet. The Ethernet cable can be routed either directly through its bottom cable opening or into the wall, as preferred.

Technical Description

  • Product code    GPEN21
  • Input voltage    12 - 57 V, Passive or 802.3af/at
  • MTBF    Approximately 100'000 hours at 25C
  • Tested ambient temperature    -20°C to 70°C


  • Number of DC inputs    2 (DC jack, PoE-IN)
  • DC jack input Voltage    12-57 V
  • Max power consumption    30 W
  • Max power consumption without attachments    3 W
  • FAN count    Passive
  • PoE in    802.3af/at
  • PoE in input Voltage    12-57 V


  • PoE-out ports    Ether2
  • PoE out    Passive PoE up to 57V
  • Max out per port output (input 18-30 V)    850 mA
  • Max out per port output (input 30-57 V)    625 mA
  • Max total out (A)    850 mA


  • 10/100/1000 Ethernet ports    2
  • Number of 1G Ethernet ports with PoE-out    1


  • SFP ports    1


  • Output Voltage    Yes, Passive PoE up to 57 V
  • Mode button    Yes

Certification & Approvals

  • Certification    CE, EAC, ROHS
  • IP    IP20

More Information