Tripp Lite Under Monitor Internet Office UPS

Reliable UPS Protection Right on Your Desktop!


Tripp Lite Under Monitor UPS

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Tripp Lite Under Monitor Internet Office UPS

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Low Price GuaranteeWhat's special about this uninterruptible power supply?

  • Compact design fits on your desktop, right under your monitor, to save space and keep cables from dangling on the floor
  • Equipped with 6 surge protected outlets(3 UPS and surge, 3 surge only) for protecting your desktop computer system and peripheral devices
  • Built-in RJ11 provides your phone or fax with protection against surges that could damage your equipment
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Tripplite’s Under Monitor Internet Office UPS system provides complete surge protection for your whole PC.  The sleek design sits virtually unnoticed under your desktop computer screen, and will support the weight of almost any monitor.

  • UPS power typically provides up to 30 minutes of backup power, giving you enough time to save your work and safely shutdown or work through a blackout
  • 500VA power rating(300 watts) to power up your most critical computer peripherals
  • Diagnostic LEDs to indicate line faults and the presence of power, as well as notify you if your battery is turned on, running low or needs to be replaced
  • Master switch and 4 auxiliary switches to control individual pieces of equipment
  • EMI/RFI noise filtering to prevent interference
  • Packaging includes:
    • TM500 UPS System
    • 6-ft. telephone cord
    • Warranty information
    • Instruction manual
  • Includes $150,000 Ultimate Lifetime Insurance (USA, Puerto Rico, & Canada)
  • RoHS compliant materials for safety


TM500 Estimated Runtime
Load in Watts 20W 40W 60W 80W 100W 120W 140W 160W 180W 200W 260W 300W
Value* 119 68 46 34 27 22 18 15 13 11 7.7 6
*All runtime values are in minutes


Part # TL-TM500
Output Volt Amp capacity (VA) 500
Output Watt capacity (watts) 300
Nominal output voltage(s) supported 120V
Frequency compatibility 60Hz
Output Voltage Regulation (battery mode) +/-5%
Built-in UPS output receptacles 6 NEMA 5-15R outlet(s)
Surge Suppression only outlets 3 UPS outlets, 3 surge-only outlets
Output AC waveform (AC mode) Sine wave
Output AC waveform (battery mode) PWM sine wave
Rated input current (at maximum load) 15A
Nominal Input Voltage(s) supported 120VAC
UPS input connection type NEMA 5-15P
UPS input cord length 6ft (1.8m)
Recommended electrical service 15A 120V
Full load runtime 6 minutes (300w)
Half load runtime 17 min (150w)
DC system voltage 12 VDC
Battery recharge rate Less than 4 hours from 10% to 90%
LED indicators Front panel LEDs indicate line power status, battery power status and battery low/replace status
Alarms Audible alarm indicates power-failure
Switches 2 Switches control off/on power status and alarm-cancel/self-test operation, plus 4 switches control individual output receptacles
UPS AC surge suppression 480 joules
UPS AC suppression response time Instantaneous
UPS Dataline suppression 1 line Tel/DSL (1 in / 1 out)
EMI / RFI AC noise suppression Yes
UPS/Power module weight 11.7 lbs ( 5.3 kg)
UPS/Power module dimensions in primary form factor 2"H x 13.5"W x 12.5 "D (5.1cm x 34.3cm x 31.8cm)
UPS housing material PVC
Installation form factors supported with included accessories Under-monitor console
UPS primary form factor Under-monitor
Cooling method Convention
Operating Temperature 32°F to 104°F (0°C to 40°C)
Storage Temperature 5°F to 122°F (-15°C to 50°C)
Relative Humidity 0 to 95%, non-condensing
AC mode BTU / hr. (full load) 65.1
Battery mode BTU / hr. (full load) 88.7
Transfer time 2-4 milliseconds
Low voltage transfer
to battery power (set point)
Cold start (startup in battery mode during a power failure) Cold-start operation supported
Appearance Attractive gray under-monitor color scheme
UPS certifications Tested to UL1778 (USA), CSA (Canada), NOM (Mexico)
Product warranty period (worldwide) 2-years limited warranty
Connected equipment insurance $150,000 Ultimate Lifetime Insurance
(USA, Canada, & Puerto Rico only)
TL-TM500 Tripp Lite Internet Office Under Monitor UPS - 500VA 2"H x 13.5"W x 12.5"D 12 lbs DISCONTINUED
Indoor extension cord
Power Extensions, Extension Cords
Socket Sense Surge Protector

Power Strips / PDU

  • Horizontal for Rack
  • Vertical for Rack
  • Home / Office
  • Accessories

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