5 The USB interface and the R232 interface can communicate at the same time, and the R232 can also communicate when the key value can be modified. It must be operated when the USB is connected to the computer to get power;

main feature:
1. The LED font is illuminated, which is environmentally friendly, energy-saving, and has a lifespan of more than 30,000 hours. It is more convenient to use in dim light or at night.
2. Both the stainless steel panel and the buttons can prevent deliberate damage, especially in harsh environments, and can also operate well.
3. After the keyboard is installed, the surface can be waterproof and dustproof.
4. The keyboard adopts long-stroke convex keys with good tactile and visual experience, which can be used more clearly in dimly lit environments, and realize fast and accurate data input without noise.
5. The keys on the surface of the metal keyboard are well tamper-proof, not easy to bend and detach, so that the keys can be prevented from falling off and being damaged.
6. Customize any key surface in multiple languages to adapt to different countries and various customized styles.