WattBox Model Comparison and UPS Guide

Fast answer: WattBox managed power protects, meters and controls equipment. A UPS keeps selected equipment running temporarily when utility power fails. For a serviceable network or smart-home rack, the strongest design often uses both: UPS first, then a compatible WattBox for outlet-level control and planned load shedding.

First: WattBox and UPS are not the same thing

Managed WattBox powerSurge protection, power conditioning, individual outlet control, metering, sequencing, scheduling and remote support.

UPS battery backupTemporary runtime during an outage, voltage support and a controlled path to keep critical equipment online.

A serviceable rackProtect the system, keep essential devices running and shed noncritical loads before the battery is exhausted.

WattBox power models side by side

Choose the form factor from the equipment location, the outlet count from the actual device list, and the amperage from the electrical and equipment load—not from rack size alone.

Compact power: 250 and 300 Series

Small units for a display, cabinet, structured-wiring location or a short list of devices where full rack power is unnecessary.

2–5 OUTLETS · COMPACT · OVRC

WattBox 250

WB-250-IPW-2

2 OUTLETS

Best for: a TV, small cabinet, signage display or two individually controlled devices.

Two individually controlled outlets
Wi‑Fi or wired network connection
Surge protection, OvrC monitoring and auto reboot

Client language: Professional remote power control without adding a rack-sized unit.

WattBox 300

WB-300-IP-3 · WB-300VB-IP-5

3 OR 5

Best for: a compact AV location needing more outlets, filtration and a compatible UPS link.

Three-outlet slim and five-outlet VersaBox forms
Premium surge protection and noise filtration
Individual control, OvrC and auto-reboot support

Client language: A compact step up when two outlets are not enough.

WattBox 800 Series

The core 15-amp family for residential racks, cabinets and vertical rack distribution, with individual outlet control and metering.

15 AMP · 6 / 8 / 12 / 18 · METERED

800 Compact 6

WB-800-IPVM-6

6 OUTLETS

Best for: a smaller rack, cabinet or wall box.

Six individually controlled and metered outlets
Horizontal, vertical or out-of-rack mounting
OvrC UPS link and individual device resets

Client language: Full 800-series intelligence in the smallest rack-friendly form.

WattBox 800 1U eight-outlet rack unit on blue

800 Integrated 1U

WB-800CH1U-IPVM-8

8 CONTROLLED

Best for: a clean rack with front diagnostics and local reset access.

Eight individually controlled and metered rear outlets
Integrated 1U faceplate with a front service outlet
Local display plus OvrC remote management

Client language: The easiest 800-series model to see, service and explain inside a rack.

800 Vertical 12

WB-800VPS-IPVM-12

ZERO-U STYLE

Best for: preserving rack units while distributing power vertically.

Twelve individually controlled and metered outlets
Vertical rack mounting and cleaner power-cord routing
An 18-outlet vertical option is also available

Client language: More controlled outlets without consuming front rack space.

WattBox 820 Series

The newer 20-amp family for larger loads and more demanding racks. It requires the right branch circuit, receptacle and load plan.

20 AMP · 2 / 8 / 12 · 1920W MAX LISTED

WattBox 820 two-outlet 20 amp unit on blue

820 Compact 2

WB-820-IPVM-2

20 AMP

Best for: one or two higher-current devices needing control and metering.

Two individually controlled and metered outlets
20-amp IP power in a compact form
OvrC monitoring, auto reboot and surge protection

Client language: High-current control without a full rack chassis.

WattBox 820 1U eight-outlet rack power conditioner on blue

820 Integrated 1U

WB-820CH1U-IPVM-8

20 AMP

Best for: a higher-load rack that still needs front diagnostics and local reset.

Eight individually controlled and metered outlets
1U rack chassis with integrated faceplate
Individual metering, UPS link and OvrC control

Client language: The 20-amp version of the clean, service-friendly rack design.

WattBox 820 twelve-outlet 20 amp power conditioner on blue

820 Rack 12

WB-820-IPVM-12

12 OUTLETS

Best for: a larger 20-amp rack requiring more individually controlled outlets.

Six NEMA 5-20 and six NEMA 5-15 outlets
20A breaker, 16A UL current and 1920W listed power
Individual control, metering and Safe Voltage support

Client language: The larger high-current choice when the electrical plan and rack load justify it.

WattBox UPS choices

A UPS is selected by connected wattage, required runtime, topology and rack space. VA alone is not enough. Denali separates critical loads—modem, router, switch, controller and selected storage—from devices that should shut down first.

Standby UPS

WB-OVRC-UPS-625-8 · WB-OVRC-UPS-850-8

625 / 850VA

Best for: a small network, desk, shelf or compact low-power system.

340W or 450W maximum model choices
Four battery-plus-surge and four surge-only outlets
Simulated sine wave with a typical 1–6ms transfer

Client language: Affordable short-duration backup for a modest critical load.

WattBox online double-conversion 1500VA UPS on blue

Online Double-Conversion UPS

WB-OVRC-OLUPS-1000 / 1500 / 2000-1

ZERO TRANSFER

Best for: a critical rack, sensitive equipment or a system where power continuity matters.

1000VA, 1500VA and 2000VA choices
Pure sine wave with zero transfer time to battery
2U rack chassis, OvrC pairing and optional battery expansion

Client language: The premium UPS path for uninterrupted, conditioned power.

Extended Battery Pack

WB-UPS-EBP family

RUNTIME ADD-ON

Best for: extending runtime after the correct online UPS has already been selected.

Daisy-chain support for compatible online UPS models
Automatic battery detection on supported configurations
Up to five packs supported in the current online UPS system

Client language: Adds runtime—not more output capacity. Compatibility must match the UPS.

UPS comparison

UPS type	Models	Maximum listed watts	Transfer	Waveform	Best fit
Standby	625VA / 850VA	340W / 450W	Typical 1–6ms	Simulated sine	Small network or compact system
Online double-conversion	1000VA	1000W	Zero	Pure sine	Critical moderate rack load
Online double-conversion	1500VA	1430W	Zero	Pure sine	Larger 15A rack load
Online double-conversion	2000VA	1930W	Zero	Pure sine	High-capacity 20A rack plan

Specifications checked against current WattBox and Snap One product documentation on July 12, 2026. Availability, accessories and compatibility can change; Denali Tech verifies the final bill of materials before ordering.

Three mistakes to avoid

Do not back up everything

High-current amplifiers and other noncritical loads can consume runtime rapidly. Prioritize the network, control and essential storage.

Do not size by VA alone

Measure connected watts, required minutes, circuit amperage, heat, depth and future battery replacement access.

Do not treat UPS as a generator

A UPS bridges an outage or supports a graceful shutdown. Long outages require a different whole-home power strategy.

Serviceable power plan: label every outlet, identify always-on and resettable devices, place critical loads on battery, configure noncritical load shedding, and leave clear access for UPS battery replacement.

A simple client explanation

“WattBox lets us protect, monitor and restart individual equipment. The UPS keeps the critical part of the system alive during a power interruption. We use both when uptime matters, and we size the battery from the real wattage—not just the number of devices.”

Want the rack power plan sized correctly?

Send the rack photo, equipment list and available circuit information. Denali Tech can map the WattBox model, outlet sequence, UPS capacity, runtime priorities and WattBox-to-UPS compatibility.

Send Project Details See Rack Sizes

Does your rack need WattBox, a UPS—or both?