Features RS-485 and HART ports for connecting transmitters.
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If your MT3021 supports Modbus (check Section 7 of the manual), you will need to set a unique Node ID (1-247) and baud rate (9600, 19200, 38400) via software registers rather than DIP switches. Features RS-485 and HART ports for connecting transmitters
| Symbol | Meaning | Section | |--------|---------|---------| | ⚡️ | Electrical shock risk – use insulated tools | 1.1 | | 🔥 | High temperature components – allow cooling time before service | 1.2 | | 🧯 | Fire hazard – keep fire‑extinguishers nearby | 1.3 | | 🛡 | Protective equipment required (gloves, safety glasses) | 1.4 | | ⛔️ | Forbidden actions (e.g., operation without ground) | 1.5 | If your MT3021 supports Modbus (check Section 7