1464091 caterpillar:gear GEAR SET-BEVEL

20pcs DB9 Serial Port Adapter Connector RS232 Converter Head
AVANI EXCHANGE Description: 1. DCD: Carrier detection. Mainly used for Modem to inform the computer that it is in the online state that is Modem detects dial tone and is in the online state.2. RXD: This pin is used to receive data from external devices. || When you use Modem you will find the RXD indicator flashing indicating that there is data entry on the RXD pin.3. TXD: This pin sends computer data to external devices; when you use Modem you will find the TXD indicator flashing indicating that the computer is sending data through the TXD pin. || 4. DTR: The data terminal is ready; when the pin is high inform Modem that data can be transmitted and the computer is ready.5. GND: Logically.6. DSR: Data device is ready; this pin is high level inform computer modem is ready for data communication. || 7. RTS: Request sending; this foot is controlled by the computer to notify Modem to send data to the computer immediately; otherwise Modem will temporarily put the received data into the buffer.8. CTS: Clear Send; this foot is controlled by Modem to notify the computer to send the data to Modem. || 9. RI: Modem notifies the computer that a call is coming in. Whether or not to answer the call is up to the computer.Material: MetalScope of application: Used for connection of brush line machine room and other serial port equipment. Package included:20 x Adapter.