POWER SUPPLY INDOOR
Indoor Slim LED Switching Power Supply – 12V 33.3A (400W) | For Light Boxes & Signage
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A slim indoor switching power supply that turns your mains supply into clean 12V DC for LED strips, light boxes and signage — 400W with plenty of steady current for a bright, even glow.
Specifications
- Input Voltage: 200–240V AC
- Output Voltage: 12V DC
- Output Current: 33.3A
- Rated Power: 400W
- Installation: Indoor use
- Slim aluminium housing
Applications
- LED strip lights
- Ultra slim & fabric light boxes
- Advertising signboards & channel letters
- Display cabinets
- Indoor LED lighting systems
Features
- Clean, stable DC output for bright, even LED lighting
- High-efficiency switching design
- Slim aluminium housing that hides easily inside a light box
- Durable metal enclosure
- Easy to install
- Suitable for continuous 24/7 operation
How to Use
1. Check that all LED modules or strips you plan to connect are rated 12V DC, the same as this power supply.
2. Add up the total wattage of the load and keep it at about 80% of the 400W rating, so plan for roughly 320W in continuous use.
3. Switch off the mains first, then have a competent person wire the AC input to the L, N and E terminals and the LED load to V+ and V-, with polarity correct.
4. Mount the slim unit in a dry, ventilated spot inside the light box or sign body, with clear space around the casing for heat to escape. It is for indoor use only.
5. Restore power and check that all LEDs light evenly with no flicker.
Safety: this unit connects to mains voltage, always disconnect the supply before opening the sign or touching the wiring.
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