... 2 bright bargraph & dual line LED 2011--LK series Flow Lightbar Indicator/Controller Features: 1,Dual lightbar 101 segments ... as auto PID adjustent control function, which is for flow/level control.2,Input: Up to 2 inputs,such ... (TC and RTD), Panel Meter, Sensor Meter, inductor, Power Meter, Coulometer, Voltage Meter, Ampere Meter, Counter, Tacho Meter, Frequency Meter, flowmeter,Timer,Timer Relay, ...