The DMR20W is a compact, heavy-duty low-voltage dimmer accessory designed to give you smooth brightness control across your 12–15 VAC landscape lighting runs. Built for reliability and simplicity, it allows installers and homeowners to fine-tune light levels without changing transformers or rewiring entire systems — making it an ideal accessory for paths, gardens, hardscapes, and architectural accent lighting powered by low-voltage fixtures.
✅ Key Features & Benefits
-
Designed for 12–15 VAC systems
Engineered specifically for standard low-voltage landscape lighting, the DMR20W integrates into 12–15 VAC lines, making it an excellent fit for LED or halogen fixtures driven by a landscape transformer.
-
Up to 120W / 10A load capacity
With support for 120 W maximum power and 10 amps (MAX) capacity, this dimmer can control a substantial group of fixtures on a single run — ideal for small to mid-sized lighting zones without needing multiple controllers.
-
Precise brightness control
Instead of being locked into full-brightness output from your transformer, the DMR20W lets you adjust light levels to suit the mood, reduce glare, or balance intensity between different areas of the landscape.
-
Low-voltage, user-friendly solution
Because it operates on the low-voltage side (12–15 VAC), the dimmer works within the same environment as your fixtures and cabling, helping keep wiring simpler and safer compared with line-voltage wall dimmers.
-
Rugged black finish
The black finish helps it blend into transformer enclosures, junction areas, or discreet mounting points, keeping the focus on your lighting design rather than the control hardware.
-
Built for challenging temperatures
Rated to operate in ambient conditions down to approximately −20°, the DMR20W is suitable for cold-weather regions where outdoor components must remain dependable in low temperatures.
🔧 Technical Specifications
| 🔎 Parameter
|
🧩 Specification
|
| ⚡ Power Rating
|
120 W (maximum connected load) |
| 🔌 Operating Voltage
|
12–15 VAC (low-voltage AC) |
| 🔁 Max Current
|
10 A (MAX) |
| 💧 Waterproof Rating
|
IP20 (limited protection; install in dry or protected locations) |
| 🌡️ Ambient Temperature
|
Rated down to approx. −20° (low-temperature compatible) |
| 🎨 Finish
|
Black |
| 🛠️ Function
|
Low-voltage dimmer switch for brightness adjustment of 12–15 VAC lighting circuits |
⚠️ Important Usage Note
The IP2- rating means this dimmer should be installed in a dry or protected area (e.g., inside a transformer housing, weatherproof box, or sheltered enclosure). It is not intended for direct exposure to rain or irrigation.
🎯 Typical Applications
The DMR20W is ideal wherever you want finer control over brightness in a 12–15 VAC lighting setup, such as:
-
Path & walkway lighting
Reduce output to create a softer, more comfortable glow along walkways and garden paths while still maintaining safe visibility.
-
Accent & feature lighting
Tune brightness on tree uplights, wall washers, or sculpture spotlights so they complement the rest of the scene instead of overpowering it.
-
Outdoor seating & entertainment areas
Dial lights down for a relaxed evening atmosphere on patios, decks, or pergolas, then bring them up when more task lighting is needed.
-
Zoned landscape systems
Use a DMR20W on individual runs or zones to balance intensity between different parts of the property — for example, a brighter driveway zone and a dimmer garden zone.
🧰 Installation & Best-Practice Notes
-
Location & protection
Because of the IP20 rating, always mount the dimmer in a protected environment: inside a weatherproof box, transformer cabinet, or other enclosure shielded from direct water exposure.
-
Match load to rating
Check the total wattage of all fixtures on the controlled run. Ensure the combined load stays at or below 120 W and 10 A to avoid overload and maintain long-term reliability.
-
Placement in the circuit
Install the DMR20W on the low-voltage side, between the transformer’s 12–15 VAC output and the fixture run you want to control. Follow polarity and wiring guidelines appropriate for your system.
-
Multiple zones
For multi-zone systems, use one DMR20W per circuit you want individually dimmable. This allows one transformer to supply several branches at different brightness levels, each managed by its own dimmer.
-
Testing and adjustment
After wiring, bring the system up at a conservative dim level first, then gradually increase brightness to confirm stable operation and desired appearance before closing up enclosures.
Key Specifications
-
Wattage Capacity: 120 Watts
-
Operating Range: 12-15 VAC
-
Current Capacity: 10 Amps
-
IP Rating: IP20
Key Specifications
-
Wattage Capacity: 120 Watts
-
Operating Range: 12-15 VAC
-
Current Capacity: 10 Amps
-
IP Rating: IP20
![]()

We provide eco friendly lights with customer friendly service. Our products are backed by our manufacturer's money-back guarantee, ensuring you receive a quality product free from defects. Feel free to contact us for any help or advice with this product!
Reason to Buy from Us:
- No surprises or hidden fees.
- Safe payments via PayPal.
- 30 Day Money Back Guarantee.
- Real helpful humans on our support help desk!
- Tracking number for every order
Working Voltage: AC 12-15V
Max. Load Wattage: 120W
Max. Load Current: 10A
Dimming Range: 0%-100%
Waterproof rating: IP20 Dry Area Only
Includes: Dimmer Plate; Gasket; Wire Nuts; Plate, Set Up Instructions
- The cut off time for same day shipping is 2:00 PM (PST), excluding weekends and major holidays.
-All orders are shipped Free via Ground Shipping unless customer chooses Paid Expedited Shipping Options.
Shipping Times
- FedEx Ground: 1–5 business days within the contiguous U.S., 3–7 business days to and from Alaska and Hawaii.
- UPS Ground: 1–6 business days within the contiguous U.S., 3 business days to and from Alaska and Hawaii.
- USPS Priority Mail: Estimated 1-4 days based on origin, destination, and Post Office™ acceptance time.