Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

MAMAC HU-921-MA-8 Humidity Sensor - Replacement HVACR Controls, Switches & Thermostats
MAMACReplacement HVACR Controls, Switches & Thermostats

MAMAC HU-921-MA-8 Humidity Sensor

MAMAC Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Humidity Sensor.

SKU 3G-OTH-91230

Also listed as: HU921MA8 · HU 921 MA 8

Brand
MAMAC
Item
HU-921-MA-8 Humidity Sensor
Category
Replacement HVACR Controls, Switches & Thermostats
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

MAMAC
Manufacturer Part Number
HU-921-MA-8
Product Type
Humidity Sensor

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

MAMAC Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

MAMAC Replacement HVACR Controls, Switches & Thermostats. Specifications: Product Type: Humidity Sensor.

Frequently Asked Questions

What is the MAMAC HU-921-MA-8 humidity sensor used for?

The MAMAC HU-921-MA-8 is a humidity sensor used in HVACR systems to monitor and control relative humidity in commercial and industrial environments. It helps maintain optimal air quality and prevents condensation or mold in critical spaces like cleanrooms, data centers, and manufacturing facilities.

What are the specifications of the MAMAC HU-921-MA-8?

The MAMAC HU-921-MA-8 is a humidity sensor with manufacturer part number HU-921-MA-8. It is designed for HVACR applications requiring accurate relative humidity measurement. For detailed electrical ratings and output signal specifications, consult the product datasheet or contact 3G Electric for technical support.

Where to buy the MAMAC HU-921-MA-8 worldwide?

3G Electric supplies the MAMAC HU-921-MA-8 humidity sensor to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact our team for a quote and lead time on this replacement HVACR control component.

How to install the MAMAC HU-921-MA-8 humidity sensor?

Install the MAMAC HU-921-MA-8 in a location with representative airflow, away from direct heat sources or condensation. Follow standard HVAC sensor mounting practices: secure the housing, connect wiring per the manufacturer's diagram, and verify output signal with a multimeter before commissioning.

Used in

Common applications for MAMAC
Commercial building HVAC — MAMAC duct temperature sensors (TE-702-B-7-B) for air handling unit temperature monitoring
Industrial process control — MAMAC electronic pressure transducers (A-520-2-A-1) for differential pressure measurement in clean rooms
Building automation — MAMAC humidity sensors (HU-921-VDC-7) for relative humidity control in office spaces
Refrigeration systems — MAMAC temperature and humidity sensors (HU-225-2-MA) for cold storage environment monitoring
HVACR maintenance — MAMAC power supplies (PS-200-1-B-1-L) for powering replacement transmitters in existing control panels
Data center environmental monitoring — MAMAC combination sensors for temperature and humidity measurement in server rooms

MAMAC Products

3G Electric supplies MAMAC replacement hvacr controls, switches & thermostats. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Transducer for HVACR systems, converting energy for monitoring or controlling pressure, temperature, or flow. Used as a replacement control component in commercial and industrial heating, ventilation, air conditioning, and refrigeration equipment
MAMAC
Transducer for HVACR systems, converting energy for monitoring or controlling pressure, temperature, or flow. Used as a replacement control component in commercial and industrial heating, ventilation, air conditioning, and refrigeration equipment
Temperature sensor for HVACR systems, used to monitor air or fluid temperatures in commercial and industrial environments. Provides temperature feedback to building automation systems for climate control and equipment protection
MAMAC
Temperature sensor for HVACR systems, used to monitor air or fluid temperatures in commercial and industrial environments. Provides temperature feedback to building automation systems for climate control and equipment protection
Temperature sensor for HVACR systems, used to monitor air or surface temperatures in commercial and industrial heating, ventilation, air conditioning, and refrigeration equipment. Supports precise temperature regulation and system control
MAMAC
Temperature sensor for HVACR systems, used to monitor air or surface temperatures in commercial and industrial heating, ventilation, air conditioning, and refrigeration equipment. Supports precise temperature regulation and system control
Electronic pressure transducer for HVACR systems, converting pressure to a 4-20 mA analog output signal for monitoring and control. Used in building automation, chiller plants, and industrial process control for accurate pressure sensing
MAMAC
Electronic pressure transducer for HVACR systems, converting pressure to a 4-20 mA analog output signal for monitoring and control. Used in building automation, chiller plants, and industrial process control for accurate pressure sensing
Temperature sensor for monitoring air or fluid temperatures in HVACR systems. Used in commercial and industrial environments for building automation, process control, and refrigeration applications
MAMAC
Temperature sensor for monitoring air or fluid temperatures in HVACR systems. Used in commercial and industrial environments for building automation, process control, and refrigeration applications
Duct temperature sensor for HVAC systems, used to monitor and control air temperature within ductwork. Provides accurate temperature feedback for building automation, energy management, and zone control in commercial and industrial applications
MAMAC
Duct temperature sensor for HVAC systems, used to monitor and control air temperature within ductwork. Provides accurate temperature feedback for building automation, energy management, and zone control in commercial and industrial applications

More from MAMAC

View all MAMAC parts
This transducer converts one form of energy into a standard electrical signal for monitoring and control in HVACR systems. It is used in building automation, temperature sensing, and pressure measurement loops requiring reliable signal conversion
MAMAC
This transducer converts one form of energy into a standard electrical signal for monitoring and control in HVACR systems. It is used in building automation, temperature sensing, and pressure measurement loops requiring reliable signal conversion
Electronic pressure transducer for HVACR systems, converting applied pressure into a proportional electrical signal for monitoring and control. Used in building automation, chiller plants, and air-handling units to support precise pressure regulation
MAMAC
Electronic pressure transducer for HVACR systems, converting applied pressure into a proportional electrical signal for monitoring and control. Used in building automation, chiller plants, and air-handling units to support precise pressure regulation
This humidity sensor is designed for HVACR systems to measure relative humidity in commercial and industrial environments. It provides a voltage output (VDC) for integration with building automation systems, supporting air quality and energy management
MAMAC
This humidity sensor is designed for HVACR systems to measure relative humidity in commercial and industrial environments. It provides a voltage output (VDC) for integration with building automation systems, supporting air quality and energy management
Temperature sensor for HVACR systems, used to monitor air or fluid temperatures in commercial and industrial environments. Provides accurate readings for building automation, process control, and refrigeration applications
MAMAC
Temperature sensor for HVACR systems, used to monitor air or fluid temperatures in commercial and industrial environments. Provides accurate readings for building automation, process control, and refrigeration applications
Temperature sensor for HVACR systems, used in commercial and industrial environments to monitor and control temperature. Provides accurate readings for building automation, refrigeration, and process control applications
MAMAC
Temperature sensor for HVACR systems, used in commercial and industrial environments to monitor and control temperature. Provides accurate readings for building automation, refrigeration, and process control applications
The MAMAC HU-225-2-MA is a temperature and humidity sensor designed for HVACR systems. It is used to monitor and control indoor air conditions in commercial buildings, cleanrooms, and industrial environments where precise measurement of temperature and humidity is required for process control or comfort
MAMAC
The MAMAC HU-225-2-MA is a temperature and humidity sensor designed for HVACR systems. It is used to monitor and control indoor air conditions in commercial buildings, cleanrooms, and industrial environments where precise measurement of temperature and humidity is required for process control or comfort
Duct temperature sensor for HVAC systems, used to measure air temperature inside ductwork. Provides temperature feedback for building automation, energy management, and zone control applications in commercial and industrial facilities
MAMAC
Duct temperature sensor for HVAC systems, used to measure air temperature inside ductwork. Provides temperature feedback for building automation, energy management, and zone control applications in commercial and industrial facilities
Electronic pressure transducer for HVACR systems that converts pressure into a 4-20 mA analog output signal. Used in building automation, refrigeration, and industrial process applications for accurate pressure monitoring and control
MAMAC
Electronic pressure transducer for HVACR systems that converts pressure into a 4-20 mA analog output signal. Used in building automation, refrigeration, and industrial process applications for accurate pressure monitoring and control