Gtouch GP-121F-4M-21N Touch Screen Monitor Repair

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When an object, such as a finger, presses down on the surface of the GP-121F-4M-21N Touch Digitizer, the two layers come into contact, creating a change in resistance that is detected by the touchscreen controller. A 4-wire resistive touchscreen typically uses four wires to connect the GP-121F-4M-21N touch panel to the controller: two for the X-axis and two for the Y-axis. This technology is widely used and it is relatively inexpensive, but it is less durable and less accurate than other types of touchscreen technology such as capacitive touchscreens. A 4-wire resistive GP-121F-4M-21N HMI Panel Glass is a type of touchscreen technology that uses a layer of resistive material, typically polyester or glass, coated with a thin layer of conductive material, such as indium tin oxide (ITO).