The AUTONICS T3S-B4RP4C is a discontinued temperature controller from the T3/T4 series featuring thumbwheel switch operation with 3-digit (999) display. This 1/16 DIN unit (48 x 48 mm) offers ON/OFF and P control modes, operating on 100-240 VAC supply at 50/60 Hz. It provides relay output with DPT 100 ohm sensor compatibility and measures temperature in a 0-399 degree Celsius range.