| 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 |
Usually AC 110V–240V with a 9V battery backup (check your specific model for battery requirements). Display: Digital LCD showing gas concentration levels. 2. Installation Guidelines jkd-512com user manual
Once outside, call your local emergency services or gas provider. | Pin | Signal | Direction | Notes
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Displays "0" or remains blank until gas is detected.