Code Blue SLNP0028 PoE Battery Backup
The Code Blue SLNP0028 is a PoE-powered battery backup unit designed to maintain continuous power to access control readers, IP cameras, and networked security endpoints during mains failure. Built to IP68 specifications with a sealed enclosure, it eliminates the operational vulnerability of security devices shutting down when building power cuts out — a scenario that costs integrators service calls and leaves sites dark. The unit draws power directly from standard 802.3af PoE infrastructure, requiring no separate UPS power lines or outlet proximity, which simplifies deployment in remote locations, rooftop installations, and outdoor panel enclosures where traditional backup options are impractical.
Key Features
- IP68 Sealed Enclosure: Fully rated against dust ingress and temporary submersion. Suitable for outdoor panel boxes, network closets in humid environments, and washdown-adjacent installations without moisture-related downtime risk.
- 802.3af PoE Powered: Standard PoE input (up to 13W) — no separate AC power line required. Integrates directly into existing PoE switch or injector infrastructure.
- Access Control Compatibility: Designed to back up door readers, strike controllers, intercoms, and credential processors operating on 802.3af budgets during mains outages.
- IP Camera Backup: Maintains uptime for low-power IP cameras (under 13W consumption) during site power loss, preventing surveillance gaps in critical perimeter coverage.
- Mains Outage Duration: Holds connected devices online through brief outages and scheduled maintenance windows, extending system availability without manual intervention.
- Sealed Cable Entry: Gasketed connectors and strain relief prevent moisture migration into the battery compartment, essential for outdoor and semi-outdoor mounting.
- 1-Year Warranty: Manufacturer warranty covers defects in materials and workmanship under normal operating conditions.
The SLNP0028 addresses a common deployment pain point: access control and camera systems in buildings with unreliable mains power or outdoor installations where backup power is rarely considered. Standard UPS units are overkill for low-power PoE endpoints, require AC outlet proximity, and add installation complexity. This backup unit leverages the existing PoE network — the same cabling and power source that feeds the camera or reader — eliminating capital outlay for separate conditioning and management.
Integration is straightforward: the unit terminates to a PoE switch or injector port, and the backed-up device (camera, reader, intercom) terminates to the SLNP0028 output. On mains loss, the internal battery seamlessly supplies PoE power until the grid recovers or the battery capacity exhausts. No configuration or special VMS logic is needed — the backup is transparent to the security platform. Critical for sites where a 5–15 minute outage is operationally unacceptable (visitor entry during power failure, credential verification blackout, camera blind spot).
Deployment scenarios include corporate office building perimeter cameras backed by a single SLNP0028 near the network closet; multi-unit access control systems where readers on different door sets each have a local backup unit; and outdoor parking-lot camera installations in areas prone to brief utility interruptions. The sealed enclosure design means no climate conditioning of the mounting location is required — it survives temperature swings, humidity, and occasional spray or splash without internal corrosion or battery venting issues.
Code Blue's PoE battery backup is part of an emerging category of purpose-built backup solutions for networked security; it is not a general-purpose UPS replacement, but rather a pragmatic extension of PoE infrastructure designed by someone who understands integrator workflows and has seen too many sites lose access control during a 10-minute outage.
Eden PhillipsPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the SLNP0028 in dozens of access control and camera backup scenarios, and it solves a real problem that traditional PoE switch redundancy and typical UPS installations don't address cleanly. The differentiation is operational: a PoE switch redundancy or ring topology is expensive and requires network engineering; a room-level UPS is overkill and adds dependency on AC outlet placement. The SLNP0028 sits in between — a low-capex, low-integration-burden solution that keeps a single access control reader or outdoor camera online for 5–20 minutes during a typical mains hiccup. We've seen integrators spec one unit per building entrance and one per critical camera, which costs less than a single hour of emergency service calls when that reader or camera goes dark. The IP68 enclosure is the real win for outdoor deployments; moisture ingress into standard plastic backup units in humid climates has caused field failures, and the sealed design eliminates that failure mode entirely.
Technical Highlights:
- 802.3af Power Budget (≤13W input): Standard PoE maximum means the SLNP0028 supports low-power readers, intercoms, mini-domes, and turret cameras. If your device consumes more than 13W, you'll need 802.3at PoE+ from a dedicated port or a separate backup. Know your access control and camera power budgets before ordering.
- IP68 Sealed Enclosure: Dust and moisture ingress eliminated — we've installed units in outdoor panel boxes, rooftop camera enclosures, and parking-lot equipment cabinets without environmental failure. The sealed gaskets and strain relief are engineered for real weather, not just marketing.
- Transparent to the Endpoint Device: No special software, no VMS integration logic — the backed-up device sees standard PoE power input and doesn't know there's a battery below it. Simplifies field swaps and reduces training overhead.
- Mains Outage Tolerance (5–20 minute typical): Battery capacity is tuned for brief utility interruptions and scheduled maintenance windows. Not designed for 2-hour dark-site scenarios — if you need longer backup, a room-level UPS or redundant power feeds are the right architecture.
- No External AC Line Required: Eliminates outlet proximity dependency and reduces conduit runs. Particularly valuable in retrofit installations where running new power is cost-prohibitive or difficult.
Deployment Considerations:
- Power Budget Verification: Measure the actual PoE power draw of your access control reader or camera before installation. 802.3af ports are strictly enforced on most managed switches — if your device is already at 12W, the backup unit will not fit on the same port. Plan for dedicated PoE capacity or segregated backup ports.
- Outdoor Mounting Brackets and Cable Strain: The unit is IP68-rated, but outdoor installation requires proper mounting hardware and cable entry discipline. Verify that strain relief is tight and cable entry points are sealed; water entry around cable glands defeats the enclosure rating. Use stainless-steel or corrosion-resistant hardware in salt-air environments.
- Battery Maintenance and Replacement Cycle: Internal rechargeable batteries degrade over 3–5 years depending on ambient temperature and charge cycles. Plan replacement intervals and factor into lifecycle cost. In outdoor hot-climates (rooftops, equipment cabinets without shade), battery life may be at the lower end of that range.
- Outage Duration Expectations: Datasheet specifies runtime for a single 802.3af endpoint; if the backed-up device spikes to 13W continuously (heater-equipped reader in cold climates, max IR output on a camera), runtime contracts. Understand the realistic outage tolerance at your site.
- PoE Injector Compatibility: If using a standalone PoE injector rather than a managed switch, verify the injector supports the SLNP0028 input voltage and recovery cycle. Some budget injectors perform poorly when upstream power cycles.
The SLNP0028 is built for integrators who deploy access control and cameras in environments where a 10-minute mains outage is unacceptable and where traditional backup infrastructure (UPS room, redundant feeds, managed power distribution) is either cost-prohibitive or architecturally impractical. It's not a replacement for data-center-grade backup; it's a pragmatic solution for the edge of the network. Explore the full range of PoE infrastructure and backup options in the Code Blue catalog.
