Ubiquiti UPS-TOWER-US vs Middle Atlantic OL1000R-2: Specification Comparison
Both the Ubiquiti UPS-TOWER-US and Middle Atlantic UPX-RLNK-OL1000R-2 are 1kVA uninterruptible power supplies targeting network and AV/security infrastructure protection. The UPS-TOWER-US is a desktop line-interactive unit built for UniFi ecosystem integration, while the OL1000R-2 is a 2U rackmount online (double-conversion) UPS with networked outlet-bank control. Buyers comparing these are typically weighing topology (line-interactive vs. online), form factor (desktop vs. rack), outlet density, and platform management approach for sub-1kVA loads.
In This Guide
Which UPS topology and power output is right for your load?
The UPS-TOWER-US is line-interactive with a 600W / 1000VA output rating. Line-interactive topology corrects voltage sags and surges via AVR without switching to battery, but does transfer briefly to battery during a true outage. The 600W real-power figure is the binding constraint for load planning.
The OL1000R-2 uses an online (double-conversion) topology rated at 1000W / 1000VA — a 1.0 power factor, meaning the full VA capacity is available as usable watts. Online topology provides zero-transfer-time protection and complete electrical isolation from the utility, making it the stronger choice for sensitive electronics that cannot tolerate any transfer gap or line noise.
For a buyer with a 700–900W load, only the OL1000R-2 covers it; the UPS-TOWER-US is capped at 600W. For loads under 600W where brief transfer time is acceptable, the UPS-TOWER-US is sufficient.
How do form factor, mounting, and outlet configuration differ?
The UPS-TOWER-US is a desktop unit measuring 288 × 99 × 280.5 mm and weighing 8.17 kg (18 lb). The spec sheet references five NEMA 5-15R outlets (2 battery-backed, 3 surge-only). It ships with a standard NEMA 5-15P plug. It is not rack-mountable per the provided specifications.
The OL1000R-2 is a 2U rackmount unit (19 in W × 3.5 in H × 16 in D), weighing 33.1 lbs (15 kg) with a mounting depth range of 22–34 inches. It provides 8 NEMA 5-15R receptacles with bank-level outlet control — allowing individual outlet groups to be switched remotely. Rack ears and 4 mounting points are specified.
For rack-mounted AV or security head-end enclosures, the OL1000R-2 integrates directly into standard 19-inch racks. The UPS-TOWER-US requires floor or shelf space and is better suited to small desktop or closet deployments.
What remote management and ecosystem integration does each unit offer?
The UPS-TOWER-US includes a built-in 100/10 Mbps Ethernet port and integrates with Ubiquiti's UniFi controller software. This enables remote monitoring, load visibility, and graceful shutdown orchestration within a UniFi network environment. It is NDAA-compliant and carries UL 1778, FCC, IC, and CSA C22.2 No. 107.3 certifications.
The OL1000R-2 is described as a 'Nexsys Bank Ctrl' unit, indicating networked bank-level outlet control. The provided specifications list cTUVus safety certification, Energy Star 2.0 compliance, FCC (REACH), and note TAA non-compliance. The specific network management interface (e.g., embedded web UI, SNMP, proprietary software) is not detailed in the supplied specifications.
For organizations already running UniFi, the UPS-TOWER-US offers native ecosystem integration. The OL1000R-2's outlet-bank switching suits AV integrators and installers who need remote reboot of individual load groups, a function the UPS-TOWER-US spec does not explicitly list.
Which should you choose: the UPS-TOWER-US or the OL1000R-2?
Our take: The OL1000R-2 is the stronger choice when real-power capacity, online topology, and rackmount integration are the priority. Its 1000W (1.0 PF) output versus the UPS-TOWER-US's 600W ceiling means it supports 67% more usable load — a decisive difference for head-end racks with NVRs, switches, and access controllers stacked together. Its online double-conversion topology provides zero-transfer-time protection and full electrical isolation, compared to the line-interactive UPS-TOWER-US which transfers briefly to battery on outage. It also offers 8 NEMA 5-15R outlets with bank control versus 5 outlets on the UPS-TOWER-US. The UPS-TOWER-US is the better fit for small UniFi-centric deployments under 600W where native UniFi management, NDAA compliance, desktop footprint, and significantly lower weight (8.17 kg vs 15 kg) matter more than raw capacity or rack integration.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Ubiquiti UPS-TOWER-US | Middle Atlantic OL1000R-2 |
|---|---|---|
| UPS Topology | Line-interactive | Online (double-conversion) |
| Capacity (VA) | 1000 VA | 1000 VA |
| Real Power Output (W) | 600 W | 1000 W |
| Power Factor | 0.60 | 1.00 |
| Form Factor | Desktop | 2U Rackmount |
| Dimensions (W × H × D) | 288 × 99 × 280.5 mm | 483 × 89 × 406 mm (19 × 3.5 × 16 in) |
| Weight | 8.17 kg (18 lb) | 15 kg (33.1 lb) |
| Outlet Count | 5 × NEMA 5-15R | 8 × NEMA 5-15R |
| Outlet Control | — | Bank-level switching |
| Network Management | 100/10 Mbps Ethernet (UniFi) | Networked bank control (interface not specified) |
| Input Voltage | 120V AC, 50/60 Hz | 110–127 VAC |
| Battery Type | Lead Acid 12V, 9Ah | — |
| Operating Temp | 0–40°C (32–104°F) | 0–40°C (32–104°F) |
| NDAA Compliant | Yes | No |
| TAA Compliant | — | No |
| Safety / Energy Certifications | UL 1778, FCC, IC, CSA C22.2 No. 107.3 | cTUVus, Energy Star 2.0, FCC (REACH) |
Frequently Asked Questions
Which should you choose: the UPS-TOWER-US or the OL1000R-2?
The OL1000R-2 is the stronger choice when real-power capacity, online topology, and rackmount integration are the priority. Its 1000W (1.0 PF) output versus the UPS-TOWER-US's 600W ceiling means it supports 67% more usable load — a decisive difference for head-end racks with NVRs, switches, and access controllers stacked together. Its online double-conversion topology provides zero-transfer-time protection and full electrical isolation, compared to the line-interactive UPS-TOWER-US which transfers briefly to battery on outage. It also offers 8 NEMA 5-15R outlets with bank control versus 5 outlets on the UPS-TOWER-US. The UPS-TOWER-US is the better fit for small UniFi-centric deployments under 600W where native UniFi management, NDAA compliance, desktop footprint, and significantly lower weight (8.17 kg vs 15 kg) matter more than raw capacity or rack integration.
Is the UPS-TOWER-US or OL1000R-2 better for a rack-mounted security head end with an NVR, PoE switch, and access controller?
The OL1000R-2 is the better fit. It is a 2U rackmount unit with a 22–34 inch depth range and 4 mounting points, making it a direct rack installation. Its 1000W online topology handles combined loads that would exceed the UPS-TOWER-US's 600W ceiling, and its 8-outlet bank control lets you remotely reboot individual devices. The UPS-TOWER-US is a desktop unit and cannot be rack-mounted per its supplied specifications.
Does the UPS-TOWER-US work with non-Ubiquiti equipment?
The UPS-TOWER-US provides standard NEMA 5-15R outlets and 120V AC output, so it will power any compatible load within its 600W limit. However, its Ethernet management port is designed for integration with UniFi controller software; the degree to which monitoring and graceful-shutdown functions are available to non-UniFi systems is not detailed in the supplied specifications.
Which unit is NDAA-compliant for U.S. government or federal projects?
The UPS-TOWER-US is explicitly listed as NDAA-compliant in its specifications and carries that certification. The OL1000R-2's supplied specifications note TAA non-compliant status and do not include an NDAA-compliance claim, making the UPS-TOWER-US the only option of the two for deployments requiring NDAA conformance.
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