M12 4-pin temperature transmitters convert thermocouple or RTD signals to 4-20mA for transmission over long distances without signal degradation, with M12 connector for standard field installation.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | Loop+ | 4-20mA loop positive 15-30V | PWR |
| 2 | NC | Not connected | I/O |
| 3 | Loop- | 4-20mA loop negative return | BUS |
| 4 | NC | Not connected | I/O |
M12 4-pin temperature transmitters convert thermocouple or RTD signals to 4-20mA for transmission over long distances without signal degradation, with M12 connector for standard field installation.