- DC power supply: This product needs to be connected to a DC 4-28V power supply, the red wire is connected to the positive pole of the power supply, and the black wire is connected to the negative pole of the power supply
- DS18B20: -55℃ to 125℃, resolution-55℃~-125℃, resolution 0.1℃.
- DC 4-28V power supply
- 0.36 inch Led Red/Green/Blue Color optional
- Industrial digital temperature meter