Power where you need it: Your Ethernet Cable becomes a power source
With the Extralink EX.1957 PoE Injector, you overcome the limitations of conventional installations. Do you want to mount an IP camera under the eaves or an Access Point centrally on the ceiling in the room? No problem. This small powerhouse feeds the necessary energy directly into your Ethernet Cable. The result: you only need a single cable to the end device. This not only saves installation effort but also ensures a professional and clean appearance without visible power supplies or extension cables.
Flexible and Cost-Effective: The Smart PoE Injectors / Power Supplies Solution
Why invest in an expensive PoE switch if you only need to power one or two devices? The EX.1957 is the clever and budget-friendly alternative. Its greatest strength lies in its flexibility: you determine the voltage yourself by simply connecting the appropriate Power Supply (12V to 48V). This allows you to power a wide range of devices that support passive PoE with exactly the right voltage. An ideal addition to your existing Network that you want to specifically expand with PoE capabilities.
Important Compatibility Notes: Passive PoE Explained
It is crucial to understand that this is a passive PoE Injector. Unlike IEEE standards (802.3af/at), there is no 'negotiation' between the injector and the end device. The voltage you feed in via the Power Supply is applied 1:1 and permanently to the Network cable. Therefore, always ensure that your end device (e.g., your camera or Access Point) is explicitly designed for passive PoE and the voltage you are using. Incorrect connection can damage non-PoE devices. In addition, the injector is only suitable for Fast Ethernet (10/100 Mbps) and is not compatible with Gigabit networks.
Ideal for IP Cameras and Access Points
The EX.1957 is the perfect helper when you need a reliable Power Supply for your Network devices in locations without a power outlet. It is the ideal PoE Injector for IP Camera installations indoors and in protected outdoor areas. Many simpler WiFi Access Points or VoIP phones that support passive PoE can also be easily operated with it. In the category PoE Injectors / Power Supplies, you will find this and other adapters to make your network more flexible.
Strengths & Notes at a Glance
- Pro: Very cost-effective alternative to PoE switches.
- Pro: Flexibly supports voltages from 12V to 48V DC.
- Pro: Easy Plug & Play installation without configuration.
- Pro: Extremely compact design for discreet mounting.
- Note: Risk of device damage when connecting non-PoE devices, as no voltage check takes place.
- Note: Suitable only for Fast Ethernet (10/100 Mbps), not for Gigabit LAN.
Specifications & Features
| Manufacturer / Brand: | Extralink |
| Model: | Passive PoE EX.1957 |
| EAN / GTIN: | 5902560361957 |
| SKU / MPN: | EX.1957 / ART5079 |
| Device Type: | Passive Power over Ethernet (PoE) Injector / Adapter |
| PoE Standard: | Passive PoE (Not compliant with IEEE 802.3af/at/bt) |
| Data Rate: | 10/100 Mbps (Fast Ethernet) |
| Ports: | 1x RJ45 (Data IN), 1x RJ45 (Data & Power OUT), 1x DC Jack (Power IN) |
| DC Jack Specification: | 5.5 x 2.1 mm Barrel Jack |
| Input Voltage: | 12V - 48V DC (depending on external power supply) |
| Output Voltage: | Corresponds 1:1 to the input voltage (Passthrough) |
| PoE Pinout: | Mode B: Pins 4/5 (+), Pins 7/8 (-) |
| Data Pinout: | Pins 1/2, 3/6 |
| LED Indicator: | 1x Power LED |
| Plug & Play: | Yes, operating system independent |
| Housing Material: | Plastic |
| Color: | Black |
| Dimensions (approx.): | 70 x 25 x 25 mm |
| Weight (approx.): | 50 g |
| Mounting: | Wall mounting possible |
Scope of Delivery
| 1 x Extralink Passive PoE Injector EX.1957 |
Frequently Asked Questions (FAQ)
What is a PoE Injector?
A passive PoE Injector is a device that uses an external power supply to 'inject' voltage onto an Ethernet Cable. Unlike active PoE standards (such as 802.3af/at), it does not check if the connected device is PoE-capable but rather permanently and unchanged forwards the input voltage.
What voltage can I use with the EX.1957?
You can use any direct current (DC) voltage between 12V and 48V. It is crucial that the voltage exactly matches the specification of the device you want to power, e.g., a 12V IP Camera requires a 12V power supply.
Does this PoE Injector work with Gigabit LAN?
No, the EX.1957 is exclusively designed for Fast Ethernet (10/100 Mbit/s). Attempting to use it in a Gigabit Network will not work, as the wires used for power transmission in Gigabit are needed for data.
Is the injector compatible with 802.3af or 802.3at devices?
No, it is explicitly not compatible with IEEE standards 802.3af (PoE) or 802.3at (PoE+). These standards require intelligent voltage negotiation, which this passive injector does not perform.
Do I need a separate power supply for this injector?
Yes, a power supply is absolutely necessary and not included. You need a power supply with a 5.5 x 2.1 mm barrel connector and the appropriate output voltage for your end device.
For which devices is the EX.1957 ideal?
It is ideal for cost-effective power supply of devices in locations without an outlet, such as IP Cameras, simple WiFi Access Points, or VoIP phones that explicitly support passive PoE with a voltage between 12V and 48V.
Homepage: https://www.extralink24.com/
