... control mode,ramp/soak,48*48,SSR output, 1 alarm. with RS485 MODBUS communication function.1. Main featuresDesigned specially for ... ,AU2,RUN which respectively stand for output, first alarm, second alarm, and working condition. 1.2 Time programm setting ... ,Relay contact output ,open normallyAlarm function: High Alarm, Lower limit alarm,Deviation High Alarm.Power supply voltage rating: 100-240VAC, -15%, ...