| Model: | GT-4W-21.5 |
|---|---|
| Brand: | Greentouch |
| Origin: | Made In China |
| Category: | Computers & AV Digital / Computer Components / Display |
| Label: | touch screen , touch screen kit , LCD touch screen |
| Price: |
US $29.9
/ pc
|
| Min. Order: | 50 pc |
| Live Chat: |  | Last Online:29 Apr, 2014 |
The 4 Wire Resitive touchscreen consists of a glass layer with a conductive coating on top and a polyester top sheet with a conductive coating on the bottom. The conductive surfaces are held apart by "spacer dots", usually glass beads that are silk-screened onto the coated glass.
When a person presses on the top sheet, its conductive side comes in contact with the conductive side of the glass, effectively closing a circuit (this is called pressure sensing). The voltage at the point of contact is read from a wire connected to the top sheet.It can be touched by finger, gloved finger, leather or stylus pen.It is inherently of many advantages such as high accuracy, quick response, drift-free, stable and long durability for a life time of 1,000,000 times finger touches.
22 inch 4 wire Resistive touch screen
> Can withstand more than 1,000,000 point
> 4096x4096 Resolution
> USB or RS232 Interface
> High accuracy and sensitivity
> Glass + Film or Film + Film Material
> Finger, gloved hand and touch pen activation
> Operable in various light conditions, indoor and outdoor
> Our products have passed CE, FCC, ROHS certification!
Product Model number
| Model number | Material | Outline(mm) | Viewing Area(mm) | Active Area(mm) | Thickness(mm) | |
| GT-4W-22-EN | Glass + Film | 310x488 | 298x473 | 294x469 | 2.3 | Download |
| GT-4W-22-EN | Film + Film | 310x488 | 298x473 | 294x469 | 0.5 | Download |
Produt Specification
| Interface Type: | USB or RS232 |
| Resolution | 4096x4096 |
| Screen Ratio | 16:10 |
| Material | Glass + Film or Film + Film |
| Certificates | CE, FCC, RoHS |
| Input method | Finger or touch pen |
| Position accuracy | 1.15~2.5mm |
| Operating Voltage | DC ≤ 10V |
| Operating current | 5~25mA |
| Response time | Less than 10ms |
| Touch action force | 20~100g |
| Operating temperature | -10°C~60°C |
| Storage temperature | -20°C~70°C |
| Surface hardness | 3H |
| Working environment | Under sunlight, indoor and outdoor |
| Transparency | ≥80% |
| Isolation resistance | ≥20MΩ DC 25V |
| X.Y resistance | 100Ω~1000Ω according to the size |
| Linearity | ≤1.5% |
| The number of hits | ≥1,000,000/point |
| Warranty | 1 year |
| Support Systems | Windows 2000/Windows XP/Win 7/ Win 8/Windows NT/Linux/Mac |
| Price Terms: | EXW |
|---|---|
| Payment Terms: | TT/ Paypal / Western Union/ Bank transfer |
| Packing: | Carton |
| Lead Time: | 3-7 working days |
| SKU: | 500 |
| Standards Certificate: | CE, FCC, RoHS |
