10000 Woodward Avenue
Woodridge, Illinois 60517
+1 773-869-1776
+1 (773) 869-1329
United States
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$133.79 Avg. Price

Desktop UPS offers complete power protection for small network applications, including home offices, security systems and digital signage.

  • Protects equipment against blackouts, brownouts, transient surges and line noise
  • Keeps AC power running during blackouts to allow time for file saves and safe shutdown
  • Double-boost AVR maintains 120V nominal output during brownouts and overvoltages
  • 12 NEMA 5-15R outlets power and protect PC, home theater or digital signage equipment
  • High >98.3% efficiency and low BTU ratings save electricity and lower your energy costs
  • 2-year limited warranty


550VA/340W/120V Battery Backup for PCs, Home Theaters or Digital Signage
This OmniSmart® line-interactive UPS system with AVR protection provides reliable battery backup and AC power protection against blackouts, brownouts, overvoltages, surges and line noise that can damage valuable electronics or destroy data. The 120V battery backup is ideal protection for your home office, media center or commerce components, including computers, routers, printers, HDTVs, Blu-ray players, game consoles, ATMs, security systems and digital signage equipment.

Allows Time to Back Up Critical Files During a Blackout
Backup support allows you to work through short power failures and gives you enough time to safely save files and shut down your system in case of a prolonged blackout. Backup time varies according to load, but internal battery should keep a half load (170W) powered as long as 10 minutes and a full load (340W) up to 3.6 minutes. During normal operation, incoming utility power keeps the replaceable internal battery fully charged, so backup power will always be available.

12 NEMA 5-15R Outlets Protect Your Connected Components
Six 5-15R outlets provide battery backup, surge protection and voltage regulation for your computer, monitor and other crucial components. The other six 5-15R outlets provide surge suppression only for printers, speakers and other desktop equipment regarded as non-essential during a blackout. In addition, RJ45 jacks protect a telephone/DSL dial-up or 10BaseT Ethernet connection.

Double-Boost AVR Corrects Low/High-Voltage Conditions for Enhanced Performance
A double-boost, single-cut AVR (Automatic Voltage Regulation) circuit, designed specifically for the LATAM region, protects your equipment from incremental hardware damage, data loss and performance problems caused by brownouts and overvoltages. Slight under-voltages as low as 93V are boosted by 13%. More severe brownouts as low as 78V are increased by 35%. A voltage cut of 16% reduces UPS output during overvoltage conditions as high as 152V, all while keeping the battery fully charged and ready to take over in case of power failure.

600 Joules Fight Back Against Unexpected Power Surges
A 600-joule surge suppression rating protects connected components from the harmful effects of power surges.

Designed for High Efficiency to Help You Save Money and Protect the Environment
A >98.3% efficiency rating reduces BTU emissions, energy consumption and, ultimately, your energy costs.

Combats Electromagnetic Interference That Can Harm Equipment
Various electromagnetic and radio sources found in virtually every home and business can cause disruptive interference on the AC line. Known as EMI (electromagnetic interference) and RFI (radio frequency interference), this line noise is a common cause of performance problems and can lead to incremental hardware damage, data corruption and audio/video transmission problems. The OMNISMART550MX incorporates technology that filters out disruptive line noise so that it won't affect your equipment.

Alarm and Diagnostic LEDs Keep You Informed 24/7
The alarm sounds to report low battery, battery replace, overload and fault condition. A set of 4 LEDs reports AC line present (green), battery mode (yellow), overload/low battery (red) and battery replace (red).

USB Port Allows for Automatic Saves and Shutdowns
The HID-compliant USB port connects the UPS to a computer running free downloadable PowerAlert® software to enable safe unattended system shutdown in case of a prolonged power failure. USB cable is included.

Compact Housing Compatible with Easy Desktop or Wall-Mount Installation
The space-saving UPS fits on a desktop, shelf or any other flat surface convenient to your workstation or home theater. Keyhole mounting tabs on the rear allow easy wall installation. The five-foot power cord with space-saving right-angle NEMA 5-15P plug connects to any compatible AC outlet.

Package Includes

  • OMNISMART550MX 550VA 340W 120V Line-Interactive UPS with 12 Outlets
  • USB cable
  • Owner’s manual
Energy-Efficient Green Solutions Energy Star certified RoHS compliant


UPC Code037332256096
UPS TypeLine-Interactive
Input PhaseSingle-Phase
Rated input current (Maximum Load)6A
Nominal Input Voltage(s) Supported120V AC
UPS Input Connection Type5-15P; Right-Angled
Input Circuit Breakers7A
UPS Input Cord Length (ft.)7
Input Frequency60 Hz (±3%)
Output Capacity (VA)550
Output Capacity (kVA)0.55
Output Capacity (Watts)340
Output Capacity (kW)0.34
Output Capacity Details4.6A @ 120V. Supports 125% load for 10 minutes, 20 seconds (load PF=1.0); Supports 110% for up to 27 seconds
Power Factor  0.6
Nominal Voltage Details120v nominal output in AC and battery modes
Frequency Compatibility60 Hz
Frequency Compatibility Details60 Hz (±3%) tolerance
Output Voltage Regulation (Line Mode)120V~ (+8% / -15%)
Output Voltage Regulation (Battery Mode)120V (±5%)
UPS Output Receptacles (Surge Suppression Only)6 UPS outlets, 6 surge-only outlets
Output AC Waveform (AC Mode)Pure sine wave
Output AC Waveform (Battery Mode)PWM sine wave
Nominal Output Voltage(s) Supported120V
Output Receptacles(12) 5-15R
Output Amp Capacity4.6A @ 120V~
Battery TypeValve Regulated Lead Acid (VRLA)
Runtime Full Load (min.)  3.6 min. (340W)
Runtime Half Load (min.)  10 min. (170W)
DC System Voltage (VDC)12
Battery Recharge Rate (Included Batteries)5 hours to 90%
Battery AccessBattery access door
Battery Replacement DescriptionReplaceable internal batteries (see manual)
Voltage Regulation DescriptionAutomatic voltage regulation (AVR) maintains line power operation with an input voltage range of 78 to 152
Overvoltage Correction  Input voltages between 128 and 152 are cut by 16%
Undervoltage Correction  Input voltages between 93 and 108 are boosted by 13%
Severe Undervoltage CorrectionInput voltages between 78 and 93 are boosted by 35%
SwitchesSwitch supports On/Off power control (release after 3 seconds), UPS battery-test (line mode only, release after 5 seconds), Alarm-mute (battery mode only, release after 0.5 seconds)
Alarm Cancel OperationManual alarm-cancel supported
Audible AlarmAlarm sounds to report Battery-mode operation, Low-battery status, Overload status and UPS Battery test modelow-battery, fault, overload and replace-battery conditions
LED Indicators2 Status LEDs; GREEN indicates power status and operating mode / RED indicates battery-low, overload, replace-battery and fault conditions (see manual)
UPS AC Suppression Joule Rating600
UPS AC Suppression Response TimeInstantaneous
UPS Dataline Suppression1 line TEL/DSL or Ethernet
EMI / RFI AC Noise Suppression  Yes
Primary Form FactorDesktop
Rack Height  0U
Installation Form Factors Supported with Included AccessoriesTower; Ultra-compact desktop; Wallmount
Primary UPS Depth (mm)305
Primary UPS Height (mm)105
Primary UPS Width (mm)190
Shipping Dimensions (hwd / in.)10.71 x 6.30 x 15.00
UPS Power Module Dimensions (hwd, in.)4.14 x 7.48 x 12
UPS Power Module Weight (kg)5.50
UPS Power Module Weight (lbs.)12.13
Unit Dimensions (hwd / in.)4.140 x 7.480 x 12.000
Unit Weight (lbs.)12.130
Operating Temperature Range32° to 104°F (0° to 40°C)
Storage Temperature Range5° to 113°F (-15° to 45°C )
Relative Humidity0 to 90%, non-condensing
AC Mode BTU / Hr. (Full Load)  23.21
AC Mode Efficiency Rating (100% Load)>98.3%
AC Economy Mode Efficiency Rating (100% Load)≥98.3%
Operating Elevation0-10000 ft. (0-3000 m)
PowerAlert SoftwareFor local monitoring via the UPS’s built-in communication ports, download PowerAlert software at
Communications CableUSB interface cable included
WatchDog CompatibilitySupports Watchdog application, OS and hard-reboot restart options for remote applications
Network Management Card DescriptionNetwork management not supported
Communications InterfaceUSB (HID enabled)
Transfer Time  2-6 milliseconds (typical), 10 milliseconds (max)
Low Voltage Transfer to Battery Power (Setpoint)78
High Voltage Transfer to Battery Power (Setpoint)152
Cold Start (Startup in Battery Mode During a Power Failure)Cold-start operation supported
High Availability UPS Features  Automatic Voltage Regulation (AVR); Surge/noise protection
Green Energy-Saving FeaturesGreater than 95% efficiency - GREEN UPS
Grounding DetailsIncludes side-panel grounding lug
UPS ApplicationsHome/Office Desktop
Product CertificationsRETIE (Colombia); CSA (Canada); NOM (Mexico); UL 1778
Product ComplianceRoHS; EAC (Belarus, Kazakhstan, Russia); ENERGY STAR Qualified; FCC Part 15 Class A (USA)
Product Warranty Period (U.S. & Canada)2-year limited warranty

Questions & Answers


Services & Extended Warranties

Preventive Maintenance

Part Number Description
TL0005NXXX6009UC UPS Preventative Maintenance on units 0-6000 VA for select products, Smart, SMX, SU UPS
TLWFLN72XX2509UC 2-Year Onsite Service Contract -0-2500 VA UPS, Smart, SMX, SU systems
TLWFLN73XX2509UC 3-Year Onsite Service Contract -0-2500 VA UPS, Smart, SMX, SU systems
TLWFLN75XX2509UC 5-Year Onsite Service Contract -0-2500 VA UPS, Smart, SMX, SU systems

Extended Warranty

Part Number Description
TL5SW5Y0950UC 5-Year Extended Warranty Smart & SMX 0-950 VA UPS systems

Unpacking & Assembly

Part Number Description
TLAS00NXXX6009UC UPS Assembly on UPS Systems 0-6000 VA for select products, Smart, SMX, SU UPS


Part Number Description
TLSU05NXXX6009UC UPS Startup on UPS Systems 0-6000 VA for select products, Smart, SMX, SU UPS

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email