Profile: Airotronics is engaged in designing and building electronic timers and controls. We offer relay timers, solid state timers, microprocessors, current sensors, flashers and motion detectors. Our TG series timers with relay output provide direct control of motors, heaters, fans, compressors, pumps, lights, solenoids and alarms. Our TH series timers provide digital timing, flasher controls, percentage timers and HVAC controls.