Universal Temperature Controller YUDIAN AI-518 - Economical,wide application,precise control - High accuracy:0.25% FS ±0.1°C - APID, AMPT, PID, ON-OFF selectable with auto-tuning - Dual 4-digit display of process & set point - LED bar graph selectable for display - Universal inputs:Thermocouple,RTDs, Linear currectvoltage - Wide variety of alarm modes selectable - heatcool dual output supported - RS485232 communication supported with protocol AIBUSMODBUS