YESWELDER LYG-M800H
YESWELDER LYG-M800H Welding Helmet User Manual
Model: LYG-M800H | Brand: YESWELDER
1. Introduction
The YESWELDER LYG-M800H Auto Darkening Welding Helmet is designed to provide superior eye and face protection during welding, cutting, and grinding applications. Featuring a super large viewing screen and True Color technology, it offers enhanced clarity and comfort for professional and hobbyist welders alike.
- Great For TIG MIG MMA, Plasma Applications with Grinding Feature
- Super Large Viewing Size 3.93"X3.66" with 4 Premium Sensors
- Better clarity, True color view - 1/1/1/1 Optical Clarity
- Replaceable battery, Increased battery life
- Superior comfort with the pivot style headgear
2. Safety Information
Always wear appropriate personal protective equipment (PPE) when welding, cutting, or grinding. This helmet provides protection against harmful UV/IR radiation, sparks, and spatter. Ensure the helmet is properly adjusted and functioning before each use. Do not use if the lens is cracked or damaged.
3. Product Features
The LYG-M800H helmet is equipped with advanced features for optimal performance and safety.

Figure 3.1: YESWELDER LYG-M800H Welding Helmet with included accessories.

Figure 3.2: Key advantages of the LYG-M800H helmet including True Color, Fast Darkening, PP-Strong Material, Anti-Blue Ray, and Replaceable Battery.

Figure 3.3: The helmet features blue light blocking technology to protect eyes from harmful light emissions during welding operations.

Figure 3.4: Equipped with 4 premium arc sensors, the helmet boasts an extreme response time of 1/30000s for rapid darkening.

Figure 3.5: True Color View technology provides better clarity and real color perception compared to traditional welding lenses.
Video 3.1: Official product video showcasing the LYG-M800H Series Large View True Color Welding Helmet features and benefits.
4. Setup
Before first use, ensure the helmet is properly assembled and the battery is installed.

Figure 4.1: Instructions for replacing the CR2450 Lithium Battery. Use a Phillips screwdriver to open the battery compartment cover and place the positive terminal upward.

Figure 4.2: Adjust the headgear for size, tightness, angle, and distance to ensure a comfortable and secure fit.
5. Operating Instructions
The helmet automatically powers on when exposed to light. Select the appropriate mode and adjust settings for your welding task.

Figure 5.1: Control knobs for Shade, Sensitivity, and Delay, along with the Mode switch (Grind, Cut, Weld).

Figure 5.2: The helmet supports various applications including Grind, Stick, MIG, and TIG welding.

Figure 5.3: Adjust Delay (0.1-0.8s), Shade (Grind 3, Cut 5-9, Weld 9-13), and Sensitivity for optimal viewing.
6. Maintenance
To ensure the longevity and proper functioning of your welding helmet, regular maintenance is recommended.
- Clean the lens regularly with a soft, lint-free cloth. Avoid abrasive materials or solvents.
- Store the helmet in a dry, cool place away from direct sunlight and excessive heat.
- Check the battery indicator periodically and replace the battery when low.
- Inspect the headgear for any signs of wear or damage and replace components as needed.
7. Troubleshooting
If you encounter issues with your welding helmet, refer to the following common troubleshooting tips:
- Lens not darkening: Check battery level and replace if necessary. Ensure arc sensors are clean and unobstructed. Verify correct mode and sensitivity settings.
- Poor visibility: Clean the lens. Adjust sensitivity and shade settings. Ensure ambient light conditions are not interfering with sensor operation.
- Helmet feels uncomfortable: Re-adjust headgear settings for size, tightness, angle, and distance.
For persistent issues, please contact customer support.
8. Specifications

Figure 8.1: Detailed specifications for the LYG-M800H Welding Helmet.
| Specification | Value |
|---|---|
| Viewing Size | 3.93" x 3.66" |
| True Color View | 1/1/1/1 Optical Clarity |
| Dark State | No. 5-No. 13 |
| Light State | No. 3 |
| Wide Shade Range | UV and IR Protection: DIN 16 |
| Operating Temperature | 14°F ~ 131°F / -10°C ~ +55°C |
| Switching Time | 1/30000s |
| Power Supply | Replaceable CR2450 Lithium Battery |
| Product Weight | 1.32LB / 600g |
| Standard | ANSI Z87.1 / EN379 CE / CSA Z94.3 |
9. Warranty & Support
Your YESWELDER LYG-M800H Welding Helmet comes with a standard manufacturer's warranty. For detailed warranty information, product support, or service inquiries, please refer to the warranty card included in your product packaging or visit the official YESWELDER website.