MAMAC Systems HU-921-VDC-7 OEM Humidity Sensor with 10K Ohm Thermistor and 0-10VDC Output

The MAMAC Systems HU-921-VDC-7 is a precision OEM/unit mount humidity and temperature sensor specifically designed for HVAC and building automation system applications. This dual-function transmitter measures relative humidity from 0 to 100% RH with ±3% accuracy over the 30-70% RH range, while simultaneously providing temperature sensing through an integrated 10,000 Ohm NTC Type III thermistor.

Key Features:

• 0-10 VDC analog output for humidity measurement (field selectable 0-5 VDC or 0-10 VDC)
• 10K Ohm NTC thermistor temperature sensor for dual sensing capability
• ±3% accuracy over 30-70% RH range with full 0-100% RH measurement capability
• Temperature compensated from -30°F to 130°F (-35°C to 55°C)
• Designed to handle 100% condensing humidity with moisture-sealed electronics
• ePTFE (expanded Teflon) filter media protects sensing element
• Rugged 20% glass-filled UL-95-V-0 polycarbonate enclosure
• 12-40 VDC or 12-35 VAC supply voltage compatibility
• External mounting bracket accommodates uneven surfaces
• 1/4 inch quick disconnect terminals for easy installation

Ideal for humidification/dehumidification control and economizer applications on packaged rooftop air handlers, the HU-921-VDC-7 can be factory or field installed in fresh air hoods, discharge ducts, or return air ducts. The compact design measures 3.25 inches long by 2 inches wide by 3 inches high and weighs just 0.5 lbs, making it suitable for OEM applications where space is limited.