MAMAC Systems HU-921-VDC-12 Unit Mount Humidity Temperature Sensor with 10K Ohm NTC Thermistor

The MAMAC Systems HU-921-VDC-12 is a unit mount humidity and temperature transmitter specifically designed for HVAC and building automation system applications. This dual-function sensor is ideal for humidification, dehumidification, and economizer control on packaged rooftop air handlers.

Key Features:

• ±3% RH accuracy over 30 to 70% relative humidity range with NIST traceable calibration
• Measures relative humidity from 0 to 100% RH with full condensing humidity capability
• 10,000 ohm Type II NTC thermistor for temperature measurement
• Temperature compensated from -30°F to 130°F (-35°C to 55°C)
• 0-5 VDC or 0-10 VDC analog output for humidity measurement
• Resistance output for temperature monitoring
• Cross-linked bulk polymer capacitive sensing element with ultra-fast response
• Protected with hydrophobic and oleophobic ePTFE (expanded Teflon) filter media
• Conformal coated and moisture sealed electronics for durability
• Rugged 20% glass-filled low smoke UL-95-V-0 polycarbonate enclosure
• External mounting bracket accommodates uneven mounting surfaces
• 12-40 VDC power input with 24 VAC/VDC compatibility

This sensor is designed for factory or field installation in fresh air hoods, discharge air ducts, or return air ducts of air handling units. The protective ePTFE filter shields the sensing element from condensation, fog, salt air, pollutants, and other contaminants while maintaining accurate readings. RoHS compliant and manufactured in the USA with a 5-year warranty.