MAMAC Systems HU-226-3-VDC-12 Transducer 30067439-890 Use a certified ECM tester

Use a certified ECM tester or check for proper high-voltage input at the 5-pin connector and low-voltage communication signals at the 16-pin harness

For contractors managing electric heating systems

protecting the heat exchanger from thermal stress caused by low-flow or no-water conditions

ensuring the combustion blower is pulling sufficient vacuum before allowing the ignition sequence to proceed

The ZoneFirst MMPK is a professional-grade 3-zone control kit engineered for single-stage HVAC systems

MAMAC Systems HU-226-3-VDC-12 Transducer 30067439-890 Use a certified ECM testerThe MAMAC Systems HU 226 3 VDC 12 is a professional grade duct humidity and temperature transducer engineered for high demand HVAC and building automation systems (BAS). This unit features a high performance bulk polymer capacitive sensing element protected by a proprietary ePTFE hydrophobic filter, ensuring reliable performance in environments prone to condensation, salt air, and pollutants. For precise climate control, it delivers 3% RH accuracy