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

MAMAC Humidity Sensor: Mfr Part # HU-921-VDC-7 - Replacement HVACR Controls, Switches & Thermostats
MAMACReplacement HVACR Controls, Switches & Thermostats

MAMAC Humidity Sensor: Mfr Part # HU-921-VDC-7

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

SKU 3G-OTH-91885

Also listed as: HU921VDC7 · HU 921 VDC 7

Brand
MAMAC
Item
Humidity Sensor: Mfr Part # HU-921-VDC-7
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-VDC-7
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-VDC-7 humidity sensor used for?

The MAMAC HU-921-VDC-7 humidity sensor is used in HVACR systems to measure and control relative humidity in commercial and industrial environments. It provides a voltage output for integration with building automation systems, ensuring optimal air quality and energy efficiency.

What are the specifications of the MAMAC HU-921-VDC-7?

The MAMAC HU-921-VDC-7 is a humidity sensor with manufacturer part number HU-921-VDC-7. It is designed for HVACR applications and outputs a VDC signal. For detailed electrical ratings and operating range, consult the product datasheet from MAMAC.

Where to buy the MAMAC HU-921-VDC-7 worldwide?

You can source the MAMAC HU-921-VDC-7 humidity sensor through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide locations. Contact us for availability and lead time.

How to install the MAMAC HU-921-VDC-7 humidity sensor?

Install the MAMAC HU-921-VDC-7 in a location with representative airflow, away from direct heat or moisture sources. Follow standard HVAC sensor mounting practices: secure the base, connect the VDC output to the controller, and verify wiring per the MAMAC manual. Calibrate if required.

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
MAMAC Humidity Sensor: Mfr Part # HU-225-2-MA
MAMAC
MAMAC Humidity Sensor: Mfr Part # HU-225-2-MA
MAMAC Temperature Sensor: Mfr Part # GR-901-MA-7-D
MAMAC
MAMAC Temperature Sensor: Mfr Part # GR-901-MA-7-D
MAMAC Sensor: Mfr Part # TE-703-D-17-A-1
MAMAC
MAMAC Sensor: Mfr Part # TE-703-D-17-A-1
MAMAC Transducer: Mfr Part # HU-224-2-MA
MAMAC
MAMAC Transducer: Mfr Part # HU-224-2-MA
MAMAC Sensor: Mfr Part # TE-704-A-12
MAMAC
MAMAC Sensor: Mfr Part # TE-704-A-12
MAMAC Sensor: Mfr Part # PR-275-R2-VDC
MAMAC
MAMAC Sensor: Mfr Part # PR-275-R2-VDC

More from MAMAC

View all MAMAC parts
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
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
MAMAC Duct Temperature Sensor: Mfr Part # TE-702-B-7-B
MAMAC
MAMAC Duct Temperature Sensor: Mfr Part # TE-702-B-7-B
MAMAC Transducer: Mfr Part # EP-313-020
MAMAC
MAMAC Transducer: Mfr Part # EP-313-020
MAMAC Space Temperature Sensor: Mfr Part # TE-205-P-4
MAMAC
MAMAC Space Temperature Sensor: Mfr Part # TE-205-P-4
MAMAC Humidity Sensor: Mfr Part # HU-921-MA-8
MAMAC
MAMAC Humidity Sensor: Mfr Part # HU-921-MA-8
MAMAC Transducer: Mfr Part # HU-224-3-MA
MAMAC
MAMAC Transducer: Mfr Part # HU-224-3-MA
MAMAC Probe: Mfr Part # A-520-2-A-1
MAMAC
MAMAC Probe: Mfr Part # A-520-2-A-1