This is an external sensor for the Dragino LHT65.
It uses an Audio port style connector to plug in to the LHT65 and is roughly 3 feet in length.
External Temperature Sensor – E1:
- Resolution: 0.0625 °C
- ±0.5°C accuracy from -10°C to +85°C
- ±2°C accuracy from -55°C to +125°C
- Operating Range: -55 °C ~ 125 °C
I’m typically a big fan of recommending you read the sensor manual (included in the LHT65 documentation) here is one noteworthy thing about this probe sensor that is worth pointing out.