The new upgrade, compatible with all standard DB9 serial devices, 24 * 7 * 365 all day continuous work, stable and reliable performance.
| Interface with super-thick alloy, reducing the transmission impedance, reduce signal loss, oxidation resistance, corrosion resistance, wear resistance, 10,000 nondestructive testing plug.
| Applications: desktop computer, digital machine tools, PDA, bar code and other DB9 serial devices.
| High-quality environmentally friendly PVC material, super wear-resistant, Integral injection molding.
| Special Note: Usually this product needs to be used in pairs, specifically divided into: female to female, male to female, male to male three kinds of situations. Can also be used alone. In order to meet the needs of different users, this product package contains a product (pictured), Please make clear the actual use requirements before purchasing.

The new upgrade, compatible with all standard DB9 serial devices, all day continuous work, stable and reliable performance. | Interface with super-thick alloy, reducing the transmission impedance, reduce signal loss, oxidation resistance, corrosion resistance, wear resistance, 10,000 nondestructive testing plug. | Applications: desktop computer, digital machine tools and other DB9 serial devices. | High-quality environmentally friendly PVC material, super wear-resistant, Integral injection molding. | DB9 RS232 Female to RJ45 Female ： https://www.amazon.com/dp/B01N8VEG7G

RS422 interface, two-way communication. A B Y Z ultra-long transmission 1000 meters. | The module has 15KV ESD protection. Add 10 ohm overcurrent protection resistor to the board. The module comes with TVS diodes. Anti-lightning, anti-spike voltage. | The module has 120 ohm terminating resistance, can reduce long-distance communication echo interference effectively. | A power indicator and data transceiver indicator. Data status panoramic view. The module TTL side uses 5V DC power supply RXD TXD compatible 5V logic signal. | The module uses high-quality MAX490 chip, stability and communication speed is extremely high, up to 2.5MBPS.

USB Host Shield for Arduino UNO MEGA 2560
| Support the Google Android ADK
| Compatible with Arduino Uno 328
| Compatible with Arduino Diecimila / Duemilanove 328
| Compatible with Arduino Mega 1280