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Numeric Digital 600VA Plus UPS Review

by Shivaranjan on August 1, 2006


Some time back I got myself a Numeric Digital 600 Plus UPS as my old Microtek UPS stopped functioning. In this post I will review this UPS.

So what’s in the box???

Telephone Cable

UPS Monitoring Software CD

UPS to PC Interface Cable

Numeric Family Utility CD (Not that much useful, it contains softwares, sharewares, small games and wallpapers)

Two DVD’s containing the following Movies: The Terminator Judgment Day, Rush Hour 2, American Pie, Rambo 3 (this I liked the most :wink: )

And of course the UPS :smile:

Features of this UPS:

Microprocessor Based Design

This UPS contains a microprocessor which ensures highly reliable and accurate operation.

Built-in AVR

The built-in Automatic Voltage Regulator (AVR) provides regulated clean power for a wide range of input voltage. The input range of the UPS ranges from 140V to 300V, which allows the UPS to work in mains mode even under low & high voltage conditions, thereby extending battery life.

Intelligent Battery Management

This feature prevents the draining of battery by automatically shutting down the UPS when the when the load is very less or if there is no load connected to the UPS while operating in the battery backup mode.

Telephone / Modem Line Surge Protection

This UPS protects your computer from lighting strikes if you happen to connect to the internet via telephone line.

UPS Monitoring Software
This UPS comes bundled with UPS monitoring software which monitors the UPS status and provides useful information like input/output voltages, battery status and percentage of connected load. You can even schedule the UPS to switch ON/OFF at the specified time.

Performance of the UPS:

I tested the backup of this UPS using the following configuration (load).

Intel Pentium D 930 3.0 Ghz which consumes 135w at peak usage.

On Gigabyte 945G based motherboard.

Three Hard Disk drives.

Two Optical Disk drives.

One Floppy Disk drive.

Samsung 17″ CRT Monitor .

Creative 2.1 speakers.

Lexmark Z13 Printer.

The backup time I got with the above mentioned load is around 14 minutes which is a good figure for a 600VA ups.

UPS Monitoring Software:

The UPS comes bundled with Winpower 2.0 UPS monitoring software which is quite user friendly and comes with useful features.

Features of the Monitoring Software:

  • Display of Input and Output voltages.
  • Display of battery status
  • Automatic shutdown in case of low battery
  • Scheduling the operation of UPS.
  • The best part is that we can switch off the audible alarm of the UPS, which gets triggered when power goes off. I liked this feature because of irritating beeps which the UPS makes in the event of power failure.

See below the screenshots of the UPS monitoring software. (Click them to Enlarge)

UPS in Normal Operation Mode

UPS in AVR Operation Mode

UPS in Battery Backup Mode

UPS Audible Alert Control Setting

UPS ON/OFF Schedules Setting

UPS Shutdown Parameter Setting

Verdict / Conclusion:

Going by the performance, features this UPS has to offer and the price I give it 4.5/5. This UPS is available for Rs.1700 in Chennai.


  • Good build quality
  • Right Pricing
  • Large service Network
  • Built with modern features.
  • Excellent UPS monitoring software
  • Sufficient battery back-up


  • None. :-)

Here are some photos of the UPS which I took using my Nokia 6630. The images are not very clear as it was taken in dark environment. Click on the images to enlarge them.

Your feedback would be very much appreciated. By the way what UPS do you use???

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{ 12 comments… read them below or add one }

S.Jagan November 3, 2011 at 7:22 pm

Dear Sir/Madam,
I’ve Numeric Digital 600 EX ups. system Intel I3, LG LED Monitor my PC run under power failure condition ofter 35 Seconds UPS automatically turn off. Please reply me
1) What is minimum Load Capacity to key holding the ups in on condition
2) What is full load capacity at Backup mode
3) What is full load Capacity at Mains Power.

Thanks and Regards

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Indranil Chatterjee July 16, 2013 at 1:17 pm

The Numeric Digital 600 EX V UPS which I had bought about four years back, has suddenly started showing a red blinking signal in between the green and yellow indicators, which show steady power and alert power levels, respectively. Since it is showing red signal, does it mean that the battery should be replaced? Or is there some other technical problem? Please reply at your earliest possible convenience.

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Rajan November 23, 2014 at 6:51 pm

i am using numeric 600 ex ups for two years. But now it is continuously giving beep sound. It indicates the time for battery replacement. so i need to know how much the battery would cost. Thanks in advance☺

karan June 15, 2015 at 2:34 pm

i use numaric digital 600 ex form 4 years but now my ups dous not turns on ,if i click on the power button then its power on with a long beep and turn off automaticly with in 2 – 4 secounds.
Help to fix it

Krishnaswami Srinivasan August 4, 2015 at 1:24 pm

Your description about the UPS Numeric Digital plus 600VA was quite interesting and useful for me. I am already having one. But the battery life was over. On going through your report, I have decided to simply change the battery and use it again till it becomes irrepairable. Thank you. Thanks a lot once again.

Ramesh Gavade November 2, 2015 at 2:08 pm

I have a Numeric 600 plus UPS which is not working. I suspect that the issue is with the battery. I had kept this unit unused for a long period. Where can I get the service support? Please share contact details if possible. Thanks, Ramesh

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