Profile: Doyen Micro Systems Pvt. Ltd. manufactures filter controllers, indicators and monitors. Our product line includes sequence/bag filter controllers, rapping programmers, zero speed monitors, rpm indicators, transducer / transmitter / indicator- volt, amp, watt, VA, pf, frequency, speed & others; temperature indicators, controllers, scanners, programmers (heat-cool ramp/soak); P/PI/PID controllers, data loggers/recorders, amp-hour meters, battery charge controllers, counters, timers, alarm annunciators, and mA/mV/V signal isolators/distributors.