Sihovision EETI Waterproof Touch Solution Enables EV Charging Stations to Overcome Harsh Environmental Challenges

A leading EV charging network operator deployed DC fast-charging stations across demanding outdoor environments—seaports, industrial parks, and logistics hubs—serving fleet vehicles, commercial trucks, and local users around the clock. These charging locations, typically in exposed areas, must maintain 24/7 operation through extreme weather conditions.

The operational reality at ports and logistics facilities means users routinely wear heavy-duty work gloves. Simultaneously, charging stations must perform reliably through rain, fog, and high humidity. Touchscreens frequently encounter water droplets, while contending with intense sunlight, temperature swings, and other environmental stressors. Operating temperatures range from -20°C in winter to 70°C during summer heat—an exceptionally demanding environment for any electronic interface.

Real-world operations revealed five critical pain points:

1. Gloved Operation Difficulties
When workers and drivers wore gloves, conventional capacitive screens required multiple taps to register input—or failed to respond at all. This extended each charging session by 2-3x, creating significant queue delays during peak hours and frustrating user experiences.

2. Rain-Induced False Touches
Water droplets on the screen surface triggered phantom inputs, generating numerous unintended actions. During rainy conditions, the false touch rate exceeded 35%.

3. Interface Control Loss Disrupting Charging Process
Rain caused screens to "jump" erratically, with interfaces switching unexpectedly. This led to incorrect charge starts/stops and interrupted payment flows, resulting in financial disputes and eroded customer trust.

4. Accessibility Issues for Certain User Groups
First-time users struggled with misoperations during adverse weather, raising safety concerns. Customer service complaints spiked over 60% during rain and snow events, overwhelming support teams.

5. Mounting Maintenance Costs
False touches and equipment failures required field technicians to frequently restart systems, replace screens, or provide on-site guidance. Monthly maintenance calls exceeded 150 per location, driving up labor and parts expenses.

Sihovision developed an industrial-grade display solution specifically for outdoor charging applications, featuring EETI waterproof touch technology across a complete size range from 7" to 21.5", with 1000-nit high-brightness displays.

Touch Technology & Algorithm Optimization

· EETI 80 professional waterproof touch IC supporting 10-point capacitive touch

· Intelligent algorithms precisely distinguish between "water droplet signals" and "genuine touch inputs," effectively filtering rain-induced false touches

· Supports gloved and wet-hand operation with rapid response—achieving 98%+ single-touch success rates

· 2mm chemically strengthened glass cover with 7H surface hardness for scratch and impact resistance

Structural & Protection Design

· Front panel achieves IP65 rating—fully dust-tight and protected against water jets

· Aluminum alloy bezel with sandblasted and hard-anodized finish, featuring UV protection and anti-discoloration treatment

· Anti-glare (AG) surface treatment maintains ≥85% light transmission, ensuring readability in direct sunlight

· 1000-nit ultra-high brightness with ambient light sensor for automatic dimming, guaranteeing all-weather visibility

Industrial-Grade Design for Harsh Environments

· Wide temperature operation: -20°C to 70°C operating range handles extreme cold and heat

· Wide voltage input: DC 9-36V lockable power connector adapts to various charging station power systems

· Fanless passive cooling eliminates dust accumulation and mechanical failures

· 24/7 continuous operation capability with 50,000-hour WLED backlight lifespan

· Comprehensive connectivity: VGA, DVI, HDMI video inputs plus USB touch interface accommodate diverse charging station controllers

Sihovision collaborated closely with the client's technical team to conduct comprehensive laboratory simulations:

· Rain simulation: 30-minute continuous spray testing validated touch response accuracy and waterproof sealing

· Water droplet coverage testing: Uniform water droplet application assessed false-touch filtering algorithm performance

· Condensation testing: Low-temperature, high-humidity conditions verified touch stability with condensation present

· Glove testing: Multi-point touch and swipe operations tested with industrial gloves ranging from 1mm to 5mm thickness

· Temperature cycling: -30°C to 80°C thermal cycles confirmed environmental adaptability

Results demonstrated 97.5% touch accuracy when gloved and false-touch rates controlled below 3% with water coverage—fully meeting outdoor charging requirements.

Following laboratory validation, three representative sites were selected for field trials:

· Port charging station: High humidity with salt spray corrosion

· Logistics hub: Low temperature with dust and wind exposure

· Industrial park: High temperature with intense solar radiation

Each pilot site received six Sihovision waterproof touchscreens deployed alongside six existing conventional screens for three-month comparative evaluation, tracking:

· User operation success rates

· False touch occurrence frequency

· Weather-related complaint volumes

· Equipment failure rates

· Maintenance response frequency

After three months of real-world operation, Sihovision's EETI waterproof touch solution delivered measurable improvements:

· Gloved operation success rate: Increased from 52% to 97.5%—a 45.5 percentage point gain

· Rainy weather false touch rate: Dropped from 35% to 2.8%—a 92% reduction

· Per-session operation time: Decreased from 3.2 minutes average to 1.1 minutes—66% efficiency gain

· Weather-related complaints: Down 78%, with user satisfaction climbing to 4.7/5.0

· Charging process smoothness: Users report "instant response," with peak-hour queue times shortened by 40%

· First-time user friendliness: Clearer operation flow reduces anxiety from misoperations

· False-touch-induced system restarts: Reduced 89%

· Field service calls: Dropped from 150/month to 23/month—an 85% decrease

· Screen replacement frequency: Fell from 15% quarterly to 1.2%

· Mean time between failures (MTBF): Extended from 720 hours to over 8,760 hours

· Adverse weather availability: Improved from 82% to 99.2%

· Zero charging interruptions due to screen issues throughout the three-month trial

Jesse, the project lead, stated: "Sihovision's EETI waterproof touch solution genuinely solved our outdoor charging station pain points. Whether users are wearing gloves or operating in the rain, the touch response remains highly sensitive and accurate. What impresses us most is the dramatic reduction in maintenance costs—this directly improves our operational efficiency and profitability."Sihovision industrial touch display solutions—engineered for harsh environments, making outdoor charging smarter, more reliable, and more efficient.

About Sihovision
Shenzhen Shinho Electronic Technology Co., Limited specializes in manufacturing industrial touchscreen monitors, offering a complete 7" to 21.5" range of industrial-grade touch displays. Our products serve diverse applications including EV charging stations, self-service kiosks, industrial automation, and medical equipment. We're committed to delivering high-reliability, high-performance display and touch solutions to our customers worldwide.