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4 of 5 people found the following review helpful
on August 3, 2012
I have had both a Malibu 200 watt and 121 watt transformer for over 10 years with no problem with either of these. I decided to replace my halogen landscaping lights with much more efficient LED lights as a way of reducing my electric bill. Since that also reduced the demand on these transformers, I thought it would be a good idea to replace the 200 watt transformer with this 88 watt model....also thinking I might want to replace both; but fortunately I only replaced one to see how well it worked....in short, it was a very bad decision to replace either of them.

After measuring the actual watts used by each of the transforms, I discovered what reviewer "Dinoz" discovered: "...the timer does NOT control the power to the transformer" like it does on the Malibu models. What does this mean? Well, assume you want your landscaping lights on for 4 hrs each night, and off for the remaining 24. The transformer alone draws about 36 watts of power, so at 10 cents/kw-hr, you would be paying an extra $26/yr for this transform to be unnecessarily on for the remaining 20 hours/day... eliminating or significantly reducing any savings by switching to LED lights. I also discovered that as long as the total load on the transformer was greater than about 40 watts, the difference in power requirements between the 88, 121 and 200 watt systems was very minor and I should simply continue to use my old transformers. I don't know if Malibu's 200 and 121 watt models are still available, or have changed in the last 10 years; but anyone would be wise to pay more for a model where the transformer cuts off with the lights, even if it is rated at more watts than is needed.

Update: My older 200 watt Malibu transformer failed and I replaced it with Intermatic ML121RT Low Voltage 121-Watt Power Pack with Timer, Black for less than $22 on Amazon. This is the same as my 121 watt Malibu model, where the transformer cuts off with the lights, only drawing about 10 watts to run the clock. This is a much better transformer, and a bargain at this price!
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2 of 2 people found the following review helpful
on January 9, 2012
I purchased this 88-Watt power pack with timer to replace the 44-Watt model that came with my intermatic light set from 3 years ago. Over the course of the last year my 44-watt power pack was starting to make a noticeable buzzing sound. Through my online research I found out this sound is typical when your power pack is going to die in the coming months. After a record hot summer the 44-watt power pack would no longer function. It could be unplugged and once cooled off it would work for about 10 minutes then shut off again. So, I found this option on Amazon & placed the order. It's the exact same size as the 44-watt pack, but, as the name implies, handles more watts. I can't say if the lights are running brighter since we haven't run them since the summer. There is no sound whatsoever from this 88-watt pack, which is nice, but it turns the lights on just like I like it.
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3 of 3 people found the following review helpful
on July 2, 2013
My old one never made a sound and ran for 10 years. This one I can hear through the wall.
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2 of 2 people found the following review helpful
on June 26, 2010
This power pack and timer is very good,used to control low voltage external lights and water feature. It is very robust in construction and weather proof, can be located near to the feature and depending on the wattage of the lights, different Power Packs can be supplied.Unable to locate manufaturer in the uk,this item is made in the USA, only down side is the cost of postage, other than that it is a very good product.
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2 of 2 people found the following review helpful
on October 7, 2008
We bought this as a replacement when our old power pack quit working. The lights all worked fine, just needed the power pack. It was delivered fast and easy to install. We were very happy to have our lights working again. The old one lasted over 10 years, so it's a great product.
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2 of 2 people found the following review helpful
on July 24, 2010
Unit works properly however the turn down wire fastener screws are shipped in separate small plastic bag enclosed with timer. The screws would not thread up to timer and had to retro fit with proper screws from hardware store .Metric thread was not correct thread, frustrating.
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1 of 1 people found the following review helpful
on April 22, 2014
I use this transformer to power my backyard landscape lights and spots. All lights on the system have been converted over to LED lights so there is not a very heavy draw on this transformer. The transformer works well but it is loud when it is on. I have an X10 device turn on/off the power to it and when it is on I can hear it outside the garage. Not a low hum but a loud one. Since I've worked with electronics as a career and as a hobby too I know that often transformers do this. It doesn't mean they've gone bad, it just means they were not the highest quality when the windings were sealed and secured around the core internally.

PROS:
- Provides ample power to power 4 LED floods for tree highlighting and 3 ground LED lights
- Closing cover on unit makes it not stand out

CONS:
- UL Rated for outdoor use only (reason: wiring was not designed to go through walls)
- Loud when powered on (not the highest quality transformer, if in a garage or outside who cares)
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2 of 2 people found the following review helpful
on February 14, 2014
I had a 300 watt intermatic running my Malibu lights, I changed out all the bulbs to LEDs so it was way to many watts, bought this plugged in no problems.
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1 of 1 people found the following review helpful
on February 15, 2012
Intermatic, Inc. has produced these dependable power packs for many years and they are still the #1 'Tried and True' power packs for low voltage landscape lighting. They are easily identifiable by the white timer dial on the face. They are simple to set and they operate off of time-of-day rather than dusk-to-dawn. Intermatic manufactured these power packs with the Malibu brand name on them until circa 2010. Today, Intermatic still produces the same power packs, but with the Intermatic name on them and they still have the same great 5-year warranty.

Don't be fooled by the Malibu name on power packs that have a built-in photo sensor, as these are the 'NEW' power packs made for Malibu in Taiwan and they only have a 1 year warranty. You will get what you pay for.
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1 of 1 people found the following review helpful
on January 4, 2014
I plugged it in, set the time, set the "on" and "off" time and all I got was "off" time. When I manually turned the dial to turn on my lights, the power supply works and outputs the correct voltage but, the timer dial does not move. I can hear the old fashioned timer motor running and feel the vibration from the motor, it just won't turn the dial. Tried it on a different circuit, just to double check it. The dial never budged.

I've had good luck with this brand before, I guess this one is just a bad one.

I'm returning it for another of the same.
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