MikroTik Gigabit Passive Ethernet Network Smart PoE Injector with SFP
The GPEN21 is a versatile power injector with advanced software control and useful features for managing and monitoring devices. It has an Ethernet and SFP port for easy fiber connectivity and can be securely attached to a wall or communications cabinet for flexible cable routing.
Tech Specs
| Device Specifications | |
|---|---|
| Product code | GPEN21 |
| Suggested price | $40.00 |
| Switch chip model | 88E6341 |
| Operating System | SwitchOS Lite |
| Input voltage | 12 - 57 V, Passive or 802.3af/at |
| MTBF | Approximately 100'000 hours at 25°C |
| Tested ambient temperature | -20°C to 70°C |
| Powering | |
| 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 |
| PoE in | 802.3af/at |
| Cooling type | Passive |
| PoE in input Voltage | 12-57 V |
| PoE-out | |
| PoE-out ports | Ether2 |
| PoE out | Passive PoE up to 57V |
| Low voltage PoE-Out current limit | 850 mA |
| High voltage PoE-Out current limit | 625 mA |
| Max total out (A) | 850 mA |
| Ethernet | |
| 10/100/1000 Ethernet ports | 2 |
| Number of 1G Ethernet ports with PoE-out | 1 |
| Fiber | |
| SFP ports | 1 |
| Other | |
| Output Voltage | Yes, Passive PoE up to 57 V |
| Mode button | Yes |
| Certification | CE, EAC, ROHS |
| IP | IP20 |
FAQs
Q1: What is the MikroTik GPEN21?
A: It’s a smart power injector that also acts as a software‑controlled Gigabit Passive Ethernet (GPEN) repeater, enabling both PoE delivery and managed switching/monitoring.
Q2: What power inputs does the GPEN21 support?
A: The GPEN21 accepts power from a DC jack (12–57 V DC) or via 802.3af/at PoE‑in, giving flexibility for different deployment setups.
Q3: What PoE output capabilities does the GPEN21 have?
A: It can deliver passive PoE (up to 57 V) out from its Ether2 port, enabling you to power compatible downstream devices.
Q4: What network interfaces are available on the GPEN21?
A: It has 2 Gigabit Ethernet ports and 1 SFP port, allowing for both copper and fiber uplink options.
Q5: What management and operational features does the GPEN21 provide?
A: The device supports link fault detection, VLAN configuration, SNMP reporting, and basic traffic shaping — making it more than just a simple PoE injector.