[Upgraded Version] ELEGIANT Digital PID Temperature Controller 220V + Max.40A SSR + K Sensor etc. Measuring accuracy: 0.5%FS; Cold-end compensation tolerance: 2 (can be modified by software in 0~50), Resolution: 14 bit Sampling cycle: 0.5 Sec; Power : AC 100-240V 50/60HZ Output, alarm and self-tuning can be indicated by:LED PIN control (including ON/OFF, step-type PID and continuous PID) Proportional band (P): 0~full range (ON/OFF control when set to 0)