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DEWENWILS 300W Low Voltage Transformer with Timer and Photocell Sensor, 120V AC to 12V/14V AC, Landscape Lighting Transformer for Spotlight, Pathway Light, Outdoor& Indoor Weatherproof-HOSL05H

  • 300W, 120V AC to 12V/14V AC
  • Dusk to Dawn Photocell Sensor
  • 5 Timing Modes
  • Manual Reset Circuit Breaker 
  • Weatherproof & Corrosion Resistant
  • For Spotlight, Pathway Light, etc.
  • ETL Listed for Safety
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Customer Reviews

Based on 1 review
David Lipari

Per the electrician you can make the connections bigger for easier wire insertion
there is plenty of room.




【Dusk to Dawn Sensor】The 300W low voltage transformer comes equipped with a detachable photocell sensor, enabling landscape lights to turn on automatically at dusk and off at dawn when in Auto ON/OFF mode. The 6ft power cord of the sensor makes it easy to install the transformer both indoors and outdoors. 

【5 Timing Modes】Designed for easy operation with the push of a button, this voltage transformer offers 5 modes, including Manual ON/OFF, AUTO ON/OFF, Photocell ON/timer OFF, timer ON/OFF, and TEST. These various settings meet all your needs while maximizing energy savings. 

【Weatherproof & Safe 】This low voltage lighting transformer is made of high-quality metal material, making it durable and sturdy enough to resist rain, snow, dust, and corrosion. It can last for years, whether mounted on inside or outside walls. The manual reset circuit breaker automatically trips when overloaded, ensuring safety. This product is ETL listed and meets all safety requirements. 

【Easy to Use & Memory Function】To set your preferred modes, simply press the MENU, ▲▼, and ENTER keys in turn. The transformer has a memory function that remembers the mode you selected before a power outage. Built-in hanging holes and a 3.3ft STJW 18AWG power cord allow for mounting on an outside wall directly. 

【Wide Application】This 300W transformer converts 120V AC household voltage to a safer, more stable, and practical 12V/14V AC voltage level. It is compatible with all 12V/14V low voltage LED and halogen landscape lighting, such as outdoor uplights, string lights, garden decor, porch lights, and water features. 

Product Image
(1) If the transformer does not connect with load, it shows no output at terminals. Please check your lights are connected or not before mearsuring voltage.

(2) Any longer than 150ft cable per tap is not recommended for connecting with DEWENWILS Low Voltage Transformer.

(3) The transformer has a power-off memory function.When the transformerpowers on again, the transformer will enter the working mode before thepower failure.

(4) Circuit breaker may need to be reset if the transformer is not working.

landscape transformer with timer

1.Calculate the total wattage of your light fixtures in your plan.

2.Choose the transformer that is large enough to support the total wattage you need.

For example: if you have 7 pack 13W landscape lights, so the total wattage is 91W. Then you can choose the transformer higher than 91W.
Output: 12VAC/14VAC
Input: 120VAC, 60Hz
Max Power Rating: 300W

Packing List:
1× Low-Voltage Transformer
3 x Screws
3 x Wall Anchors
1 x Photo Sensor Bracket
1 x Photo Sensor
1x Instruction Manual

To set the clock

Notice: Set the current time of the tranformer same as your mobile before setting the PHOTO ON, TIMER OFF model and TIMER ON, TIMER OFF model. For example, the current time is 7:10 AM. Press the MENU button to change the CLOCK,press ENTER. The AM and PM lights will flash, Push the up buttons to select AM, press enter, Next the hour position will flash, Press the up/down button to djust the hour to 7, press enter, Now the minute position will flash, same as hours , The current time of 7:10 AM is now display. And the clock model is now set.

To set AUTO ON/OFF Model

Press the MENU button to select AUTO ON/OFF. The green light will illuminate and the display will flash,press ENTER button. The landscape lights will automatically turn on at night and off at daylight. No other additional setup is required. By the way, there is a 30 second delay from when the photo sensor determines darkness and the transformer turns on.


Your would use this setting make your lights to turn on at night and off at a time you choosing. For example, we want the landscape light will turn on at nightfall, turn off at 11:30 PM.Press the MENU button until the green light is on PHOTO ON, TIMER OFF model,press ENTER.The display will show OFF, press ENTER. The AM and PM lights will flash. Push the down buttons to set the time same as the clock setting. The current time of 11:30 PM is now display. The photo on, timer off model is set.

TEST Model

Use this mode to test the photo sensor and transformer operation. Covering the photo eye turns on the transformer. Uncovering the photosensor during the daytime or shining a bright light onto the photo sensor willturn off the transformer. Note: there is no 30 seconds delay in this mode.


Output: 12VAC/14VAC
Input: 120VAC, 60Hz
Max Power Rating: 300W

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