Choosing the right Solar Film Transmission Meter is essential for accurate window film performance evaluation. Whether you are a window film manufacturer, distributor, tint shop owner, or testing professional, selecting the
appropriate tint meter depends on your application scenario and functional requirements.
The GUOOU S0 and S1 series are both designed for professional solar film and architectural window film testing. However, they differ in structure, feature set, user interface, and application focus.
This article explains the key differences between the two models to help you choose the most suitable window film tester for your needs.
1. Application Scenario & Testing Slot Design
One of the biggest structural differences between the S0 and S1 series lies in the testing slot thickness.
GUOOU S1 Series
• 15mm testing slot
• Suitable for automotive glass, laminated glass, and thicker testing materials
• Ideal for car window testing and glass-based measurements
The S1 is better suited for users who frequently test installed automotive windows or multi-layer glass structures.
GUOOU S0 Series
• 0.8mm testing slot
• Optimized for solar film testing
• Ideal for film-only measurements
The S0 series is specifically engineered for high-precision film sample testing, making it highly suitable for window film manufacturers, distributors, and sample comparison environments.
2. Innovative Features Introduced in the S0 Series
The GUOOU S0 introduces multiple upgraded features designed to enhance professional film evaluation
▸ Electric Plasma Ball (Industry-First Integration)
The S0 series integrates an electric plasma ball for induced electrostatic interaction.
This feature allows users to observe electrostatic response differences between various window films. It serves as a visual reference tool to assist in material characteristic evaluation.
It is important to note that this function is designed as an auxiliary observation feature, supporting performance analysis alongside measured data such as TSER, IRR, UVR, SHGC, and SC.
▸ Skincare Film Identification Function
The S0 includes a dedicated detection feature that identifies when UVR reaches a true 100% blocking level.
In specific testing conditions, this function helps users recognize full UV rejection films more clearly during comparison testing.
3. Expanded Performance Parameters
Both series measure key performance indicators such as:
• VLT (Visible Light Transmission)
• IRR (Infrared Rejection Rate)
• UVR (Ultraviolet Rejection Rate)
• TSER (Total Solar Energy Rejection)
• SIRR (Selection Infrared Rejection)
The S0 series additionally includes:
• SC (Shading Coefficient)
• SHGC (Solar Heat Gain Coefficient)
4. Battery & Power System Comparison
S0 Series
• 1200mAh lithium battery
• Up to approximately 840 minutes of operating time
• Rechargeable and stable power output
S1 Series
• 1500mAh nickel-zinc battery
• Up to approximately 2100 minutes of operating time
• Rechargeable and stable power output
Both models are designed for long-term professional use, ensuring stable performance during extended testing sessions.
5. Display & User Experience Enhancement
The GUOOU S0 introduces a redesigned visual interface:
• 2.01-inch color display
• Color-coded parameters for easier distinction
• Clearer and more intuitive data recognition
Each parameter is displayed in a different color, allowing users to quickly differentiate VLT, IRR, TSER, UVR, SHGC, and SC values during comparison testing.
The S1 series maintains a practical and professional display interface suitable for standard measurement needs.
6. Which Solar Film Transmission Meter Should You Choose?
Choose the S1 if:
• You primarily test automotive glass
• You require a wider testing slot
• Your focus is on installed glass evaluation
Choose the S0 if:
• You mainly test solar film samples
• You require additional parameters such as SC
• You value enhanced display clarity
• You want innovative
Both the GUOOU S0 and S1 are professional-grade Solar Film Transmission Meters designed for accurate and consistent window film testing. The S1 focuses on structural compatibility with thicker materials, while the S0
expands functionality, visualization, and performance parameter coverage.Selecting the right model depends on your testing environment, material type, and performance evaluation requirements. For more details about GUOOU
Solar Film Transmission Meters, feel free to contact our team for model comparison and professional recommendations.
