Selec Controls Pvt. Ltd. Offers 3 Digit, Auto-tune PID Controller, available with models PID513/213/313. The 3 Digit, Auto-tune PID Controller features some key technical specifications like: Auto tuning Single setpoint Selectable sensor - J, K & PT100 12VDC output to drive SSR [Optional] 85 to 270VAC/DC [24V AC/DC optional - PID513 only]