Model 270 temperature controller features dual control with a built-in independent back-up controller to guard against accidents from equipment failure. Designed for processes requiring uncompromised safety. Provides 0.1deg C regulation of anything. NIST traceable, USB port and free data-logging and control software. Power: 120 vac, 15 amps,1800 watts total,1200 watts per channel. Dual OST/SMP.