7 Best Outdoor Low Voltage Transformers
2024 Reviews

March 1, 2024


You must have heard about transformers as these devices are quite common in many electrical appliances. As a matter of fact, a transformer is a crucial element of the electricity distribution system. There are generally two types of transformers that either lowers or increases the voltage of input current as per requirement.

As the name suggests, the low voltage transformers are the step-down type of transfers that are usually installed outside homes and offices to control landscape lighting. The low voltage transformers support added load of different types of decorative lights as well as many external electrical components. Here are some things to keep in mind while buying an outdoor low voltage transfer:

  • Wattage: The wattage rating of a low voltage transformer describes its power capacity. In case you want to connect 12 different lights of 20 watts each, you will need at least a 240-watt transformer.
  • Voltage: The main feature of the low voltage transformer is to decrease the voltage to increase the flow of current. You will find a certain range of voltage mentioned with the transfer that is also its limits on maximum intake capacity and minimum output rating.
  • Automatic Features: If you are going to use the outside decorative lights on a daily basis, your low voltage converter must have an automatic timer that turns on the unit around the evening. This will save electricity and also keep the lights safe from electrical hazards.

Now, we will bring you the absolute best low voltage transformers from the choices and give you detailed information about each option. This way, you can understand these transformers completely before buying them.

7 Best Outdoor Low Voltage Transformers 2024

PTHE300 300 Watts 12-13-14-15V AC 1 Year 120V
PTH300 300 Watts 12-13-14-15V AC 1 Year 120V
PTC300 300 Watts 12-15V AC & 12/24V DC 1 Year 120V
PTC600 600 Watts 12-15V AC & 12/24V DC 1 Year 120V
PTH600-HEAVY DUTY 600 Watts 12-13-14-15-16-17-18-22V AC 1 Year 120V
PTH150 150 Watts 12-13-14-15V AC 1 Year 120V
PTC150 150 Watts 12-15V AC & 12/24V DC 1 Year 120V

Best Outdoor Low Voltage Transformers Reviews

Prowell Low Voltage Transformer PTC300

Prowell Electric is one of the most affordable brands in the country that keeps bringing fresh designs and budget-friendly products for its customers. We a professional OEM manufacturer , our products have same good quality with those “tier one” transformer brand and made in China. We have a lot of positive responses from past users so you much check this option out.

In the 1st position, we are bringing you the most affordable low-voltage transformer you can find in the market. This Prowell Electric’s transformer PTC300 is a great pick for your low voltage lighting needs without spending a fortune. It is mostly compatible with all low-voltage landscaping lighting systems and is an ideal choice for LED and incandescent lights. Also, it features an automatic energy-efficient timer that saves you money, time, and effort in purchasing, using, or maintaining.

With its excellent rustproof plastic construction and weatherproof feature, you can use this outdoor/indoor landscape lighting transformer for all-weather without any worries. Furthermore, it is backed with a 1-year of manufacturer warranty.

Best Features:

  • Automatic energy efficient timer (dusk to dawn)
  • Compatible with all low-voltage landscape lighting systems.
  • Used with LED & incandescent lights
  • 300 watts power capacity
  • Can be used both indoors and outdoors.
  • UL/ETL Certified for effective and safe usage
  • Built-in weatherproof and rustproof plastic
  • 1-year warranty


  • Supports all lighting systems.
  • An energy-efficient option that won’t cause a fortune
  • Affordable and user-friendly unit
  • Compatible with all AC 12/15 and DC 12/24 volts low voltage lights


  • Wattage capacity is low
  • Supports a limited quantity of lights

Buying Guide For Outdoor Low Voltage Transformer

There is a chance that these options might not even be suitable for your use. To make sure you can get the most use out of the low voltage transformer you are going to buy, follow our buying guide for the best outdoor low voltage transformer given below.

Here, we will discuss various properties of a low voltage transformer and decide their necessity regarding day to day applications. This should give you a proper idea about the features that you would want to prioritize in your unit.

Design and Construction

You need to consider how the voltage transformer is built before you consider it for purchase. The design and construction of the voltage transformer affect its other parameters such as safety, power capacity, and reliability.

You should always prefer a metal outer body on a transformer rather than a plastic or fiber body for the best results. You should also consider the size of the transformer and make sure it can fit properly in a specific location. Otherwise, you might have to make extra adjustments to install the transformer.

Power Rating

The power rating is the next most important factor of the transformers because it decides the type of lights and amount of lights that can be powered via the transformer. The first thing you should do is calculate the total amount of wattage required by the lights that are being powered from the transformer.

For that, simply multiply the wattage of a single unit with the total number of lights. Make sure you add the wattage of certain special lights as well apart from the decorative lights. The resultant power rating should be sufficed by the transformer otherwise it will not power the lights properly.

Timers and Photocells

The timers and photocells are available on almost every low voltage transformer that we see in the market. These components enable automation on the unit and allow it to work on its own without needing any manual control.

A timer is a simple unit that turns the circuit on or off at a given time frame. The photocells on the other hand detect the absence of light and turn the device on automatically. It also turns off the transformer when environmental light is incident on the photocells. This is a smart feature of the unit and you should consider it for ease of operation.

Safety Measures

Safety measures are of utmost importance in almost every electronic unit. Generally, we have a 120 volts electricity input to the electronic devices at our home. In case this is a fault in the device or there is a sudden change in power input, it can turn out to be a fatal incident with severe damage.

To avoid that, there are a number of safety features put into low voltage transformers such as circuit breakers, overload protection, and overheat protection. It will also provide added protection against short circuits in case one of the lights in your circuit comes in contact with water.


The quality of a product represents its reliability for long term use. In the case of the low voltage thermal protectors available here, you will find most options to be highly reliable and a suitable choice as a long term investment. Although, a detailed analysis of the reliability of a product is necessary before purchasing it.

You can take a look at various factors such as the build quality and power capacity of the unit to get an approximate idea about its quality and performance assurance. You Should also take a look at the warranty period of the device and prefer one that offers a longer warranty period.


If you are not familiar with the low voltage transformers and this is your first time purchasing one, you are at the right place. There are many instances where consumers get confused between a couple of different options and cannot make up their mind about which is the best-suited option for them.

To make this task easier for you, we have given you the best outdoor transformers that you can get right now. We have also provided all of the necessary information with these options so that you can buy the unit right away. To make the task even more effortless for you, here are our top recommendations.

  • Because you are looking for a low voltage transformer for your decorative lights, it is safe to assume that you have already spent quite a sum on the lights themselves. In such a case, the Prowell Electric Outdoor Low Voltage Transformers’ PTH150  will be a suitable pick for you as it is available under a very affordable price tag. But, its wattage limit is limited to 150 watts to make sure if it’s good enough for your lights.this one have 12-13-14-15VAC output,and have photocell and mechanical time whthin.
  • For a large backyard filled with bright lights all around, the Prowell Electric Low Voltage Transformer PTC600 is the only suitable option as it has a 600 watts power capacity. And have 12/15VAC and 12/24VDC output .This should easily take care of a large number of lights without any problem. As it is also a premium option, you will find many smart features available on this unit.
  • Lastly, we will recommend the Prowell Electric ETL Low Voltage Transformer PTH300 Listed Low Voltage Transformer because of its high reliability and it’s the hot sell item. The outdoor transformer constantly comes in contact with moisture and dust that can potentially damage the unit.

PTH Series

PTC Series

PTHE Series

MDC Series

Other Custom Transformers