1XX series single temperature sensor / transmitter adopts high-precision temperature sensor and digital circuit. After voltage stabilizing filter, operation amplification, correction and reverse protection, it is converted into 4 ~ 20mA current signal with linear relationship with temperature, 0 ~ 10V voltage signal and digital signal output to ensure the long-term stability of the product. The product has the advantages of simple operation, low cost, multiple installation methods and is suitable for more application environments.