PoE Injector Adapter — 56V 30W Network Power Supply

Last updated: April 2026

Specifications of SQ1019 PoE Injector Adapter

Parameter	Specification
Product Type	Single-port PoE injector (midspan power supply)
SKU	SQ1019
Input Voltage	100–240VAC, 50/60Hz (universal)
Output	56VDC, 0.55A (30W maximum)
PoE Standard	IEEE 802.3af (PoE, 15.4W) and IEEE 802.3at (PoE+, 25.5W) compatible
Data Passthrough	10/100/1000 Mbps (Gigabit Ethernet, transparent pass-through)
Connectors	RJ-45 Data In (from switch/router) + RJ-45 PoE Out (to powered device)
Dimensions	166 × 80 × 43mm
Surge Protection	1KV / 4KV / 6KV optional
Protection Features	Over-current (OCP), short-circuit (SCP), over-temperature (OTP)
Energy Efficiency	DoE Level V / Level VI optional
Operating Temperature	-20°C to +50°C
Certifications	UL 62368-1, FCC Part 15, CE / EU LVD, RoHS, REACH
Warranty	12 months standard, extendable to 24 months for qualified OEM programs
MOQ	1,000 units (stock), 3,000 units (custom)

Why Choose Sunshine’s PoE Injector

Sunshine’s SQ1019 PoE injector delivers 30W of IEEE 802.3af/at power over standard Cat5e/Cat6 Ethernet cable — enough to power IP cameras, wireless access points, VoIP phones, and door access controllers without running a separate power cable to each device. At 56VDC output with ≤250mV voltage drop across a 100-meter Cat5e run, the SQ1019 maintains full PoE power delivery at the maximum TIA channel length where commodity injectors operating at 48V see marginal voltage at the powered device.

With over 22 years of power adapter manufacturing experience and 99.7% first-pass QC rate across our production lines, Sunshine produces the SQ1019 at scale for CCTV installation companies, enterprise networking integrators, and VoIP distributors. Every unit is 100% tested for output voltage accuracy (±3%), Ethernet data passthrough integrity, and PoE negotiation handshake before packaging — the testing discipline that separates a PoE injector that works at the bench from one that works reliably across a 200-camera deployment.

How a PoE Injector Works: Midspan vs Endspan

A PoE injector (also called a midspan) sits between a non-PoE network switch and a PoE-powered device. It passes Ethernet data through transparently while adding DC power on the unused pairs (Mode A for 802.3af) or all pairs (Mode B for 802.3at). The powered device receives both data and power on a single Ethernet cable, eliminating the need for a separate AC outlet and power adapter at the device location. This is especially valuable for IP cameras and wireless access points mounted on ceilings, poles, or exterior walls where running AC power would require an electrician and conduit.

The alternative to a midspan injector is an endspan — a PoE-capable switch that provides power on every port. Endspan switches cost 3–5× more than non-PoE switches of the same port count. For deployments where only 1–4 devices out of a 24-port switch need PoE, adding per-port injectors like the SQ1019 is significantly more cost-effective than upgrading the entire switch to PoE. For deployments where 50%+ of ports need PoE, an endspan switch becomes the better investment.

Applications

The SQ1019 PoE injector is specified for IP surveillance camera installations (the single largest PoE use case by volume), where cameras are mounted in locations without AC power — ceilings, building exteriors, parking structures, warehouse aisles. It is also specified for wireless access point deployments where adding AC outlets to ceiling mount locations would require construction permits and electrician labor. VoIP phone installations, door access controllers, smart building sensors, and point-of-sale terminals with PoE input are additional use cases where the SQ1019 eliminates the per-device power adapter that would otherwise be required.

For sourcing teams evaluating PoE solutions, the SQ1019 sits at the single-port injector level. For multi-port PoE needs, see our desktop power adapter catalog for higher-wattage supplies compatible with PoE switch infrastructure, or contact our engineering team about multi-port injector solutions. For the Ethernet cables that carry the PoE power, see our Cat6/6A patch cords — all rated for IEEE 802.3af/at PoE power delivery.

Customization and OEM Services

Output voltage (48V or 56V), surge protection level (1KV/4KV/6KV), energy efficiency class (DoE Level V or VI), housing color, printed or laser-etched branding, and private-label retail packaging are all customizable. MOQ is 1,000 units for stock configurations and 3,000 units for fully custom designs. For OEM customers integrating the PoE injector as a bundled accessory with IP cameras or wireless APs, we provide custom packaging with your brand’s UPC barcode, regulatory logos, and quick-start guide insert.

Sampling runs 7–14 days from approved specifications; mass production takes 25–35 days. Tariff-friendly routing via our Vietnam facility is available for US buyers managing Section 301 exposure.

Certifications and Compliance

Every SQ1019 lot is tested to UL 62368-1 for safety, FCC Part 15 Subpart B Class B for electromagnetic emissions, CE and the EU Low Voltage Directive for European market access, and RoHS plus REACH for environmental compliance. The PoE output complies with IEEE 802.3af/at power negotiation and classification standards. UL test reports are provided on request for every production lot.

Get a Custom Quote →

How to Order

Contact our sales team with your target voltage (48V or 56V), surge protection level, quantity, and destination market. We return a quote within 8 hours across US and EU time zones. Payment terms for qualified OEM accounts are typically 30% T/T deposit, 70% against B/L copy, with L/C at sight available for orders above USD 50,000.

Browse our full desktop power adapter catalog for comparison with our other power supply products.

Frequently Asked Questions

What is a PoE injector?

A PoE injector (midspan) is a device that adds power to an Ethernet cable so a PoE-powered device (IP camera, WiFi access point, VoIP phone) can receive both data and power over a single cable. It sits between a non-PoE switch and the powered device, passing data through while injecting 48–56VDC on the cable pairs.

Can I use a PoE injector with any Ethernet cable?

Yes — PoE works over standard Cat5e, Cat6, and Cat6A Ethernet cables at distances up to 100 meters. Cat5e is the minimum requirement for PoE; Cat6A is recommended for PoE++ (90W) applications. The SQ1019 supports Gigabit Ethernet passthrough on all cable categories.

What is the difference between 48V and 56V PoE?

Both voltages are used in PoE systems. 56V provides more voltage headroom for long cable runs (100m), where voltage drop across the cable can reduce the power available at the device. The SQ1019 outputs 56V, which maintains full PoE power delivery even at the maximum 100-meter TIA channel length — where a 48V injector may see marginal voltage at the powered device.

What MOQ and lead time should I expect?

At Sunshine Electronics, MOQ for the SQ1019 is 1,000 units for stock and 3,000 for custom (voltage, surge level, branding). Lead time is 25–35 days from order confirmation. Multi-SKU orders (PoE injectors + power adapters + cables on a single PO) ship on the same production timeline.