
What Is LED Anode Cathode? How to Identify, Test & Wire It
What Is LED Anode Cathode? Anode is positive, cathode negative. Identify LED polarity, test with a multimeter, and avoid dead pixels during module repair.





Shenzhen UnifyLED Technology Co., Ltd. is a professional LED screen manufacturer offering a comprehensive range of high-quality display solutions. The H Series is our practical indoor fixed-installation LED display, featuring a 500×500mm cabinet weighing just 4.2kg with strong magnetic adsorption that mounts directly onto steel structures without screws — eliminating the need for rear maintenance space and significantly reducing installation time.
We engineered the H Series with a 160° ultra-wide viewing angle using high-quality lamp beads, ensuring consistent brightness and color accuracy from any direction in crowded venues like shopping malls, conference halls, and church sanctuaries. Available in P2.6 to P4.81 pixel pitches with seamless splicing and front-maintenance capability, the H Series delivers reliable, cost-effective indoor visuals for fixed applications where simplicity and durability matter most.








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| Value | P2.6 | P2.9 | P3.9 | P4.8 |
| Pixel Pitch | 2.6mm | 2.9mm | 3.91mm | 4.81mm |
| Pixel Configuration | SMD | SMD | SMD | SMD |
| Colors | 281trillion | 281trillion | 281trillion | 281trillion |
| Refresh Rate | ≥1920/3840hz | ≥1920/3840hz | ≥1920/3840hz | ≥1920/3840hz |
| Pixel Matrix Per Panel | 192*192 | 168*168 | 128*128 | 104*104 |
| Pixel Matrix Per Sq.m | 147456 | 112896 | 65536 | 43264 |
| Viewing Angle(H/V) | 140/140 deg | 140/140 deg | 140/140 deg | 140/140 deg |
| Power Consumption | 710/240 | 710/240 | 710/240 | 710/240 |
| IP Rate | IP40/IP20 | IP40/IP20 | IP40/IP20 | IP40/IP20 |
| Input Voltage(AC) | 110/240 | 110/240 | 110/240 | 110/240 |
| Panel Size(L*W*H) | 500*500*80mm | 500*500*80mm | 500*500*80mm | 500*500*80mm |
| Panel Weight | 4.2Kgs | 4.2Kgs | 4.2Kgs | 4.2Kgs |
| Panel Material | Aluminum | Aluminum | Aluminum | Aluminum |

What Is LED Anode Cathode? Anode is positive, cathode negative. Identify LED polarity, test with a multimeter, and avoid dead pixels during module repair.

How to clean an LED screen the right way: safe products, a commercial SOP, cleaning frequency by environment, and the mistakes that kill walls.

Black spots on LED screens usually mean failed lamp beads, a dead module region, or moisture damage. Diagnose, fix, and prevent them with this guide.

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UnifyLED is a leading LED display manufacturer dedicated to providing high-quality, custom visual solutions. We design and engineer reliable displays tailored to meet the unique needs of every project worldwide.
unifyledscreen@gmail.com
+86-191-18802497
Room 301, Building E-2, Jinrong Wangcheng Technology Industrial Park, No. 858, Puri West Road, Wangcheng Economic & Technological Development Zone, Changsha City, Hunan Province, P.R. China
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