1,temperature sensor . 2,humidity sensor 3,0mA~20Ma\4mA~20Ma\0~10VDC 4,we are the manufacturer PSWT000X temperature transmitter for water pipe used for measuring liquid temp. Inside the pipe., inner sensor is heat-variable resistance with high precision, high reliability, wide applying range and excellent stabilization. Its output signal with direct ratio to the inductive temp., directly supply ...