Behind curtains or in "dead air" spots where airflow is blocked.
| Pin | Signal | Direction | Notes | |-----|--------|-----------|-------| | 2 | TXD | Output | Data to peripheral | | 3 | RXD | Input | Data from peripheral | | 5 | GND | Ground | Must connect | | 7 | RTS | Output | Hardware flow control (optional) | | 8 | CTS | Input | Hardware flow control | jkd-512com user manual
Let me know how I can assist you further. Behind curtains or in "dead air" spots where