Red Lion Controls T481010AProduct Attribute Attribute Value Series T48 Series Type On Off Temperature Controllers Overview Red Lion's T48 series of PID controllers accept signals from a variety of temperature sensors (thermocouple or RTD sensors), while the P48 controllers accept either a 0 to 10 VDC or 4 to 20 mA DC process signals. Both of these 1 16 DIN controllers precisely display process values, and provide an accurate output control signal (time proportional or linear