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Item #:
223634944
EXTECH RH490 - Precision HYGRO-Thermometer with GPP (Grains per Pound)
Item #:
223634944
XCD 1655
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Less than 30 second RH response time with 2 percent RH accuracy, dual backlit LCD display, Data Hold, Min/Max, Auto Power Off (with disable), and low battery indicator.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
Product Details
| Item Weight | 1 lbs (450 grams) |
Product Description
EXTECH RH490 - Precision HYGRO-Thermometer with GPP (Grains per Pound)
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Customer Questions & Answers
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Question:
What is the primary function of the EXTECH RH490?
Answer: The primary function of the EXTECH RH490 is to measure both humidity and temperature. This precision hygrometer/thermometer provides accurate relative humidity readings alongside ambient temperature, making it essential for various applications. Scenarios like monitoring climate conditions in greenhouses, storage facilities, or even homes are ideal. Additionally, its capability to display GPP (Grains per Pound) helps assess moisture content in air, beneficial for industries dealing with dry materials. -
Question:
How does the GPP measurement enhance this thermometer's functionality?
Answer: The GPP measurement feature enhances the EXTECH RH490's functionality by providing a more detailed analysis of humidity and moisture levels in the air. Grains per Pound is a common measure used in HVAC applications, allowing users to evaluate indoor air quality comprehensively. For example, HVAC professionals can use GPP to adjust systems for optimal comfort and energy efficiency in residential or commercial settings. It’s particularly vital in environments where moisture control is critical. -
Question:
Is the EXTECH RH490 suitable for both indoor and outdoor use?
Answer: Yes, the EXTECH RH490 is designed to work effectively in both indoor and outdoor environments. Its robust construction and range of readings make it versatile for various applications. For instance, you can use it in a laboratory to maintain a controlled environment or outside to monitor weather changes for gardening or outdoor events. It's built to provide reliable performance regardless of the setting. -
Question:
What are the key features of the EXTECH RH490?
Answer: The EXTECH RH490 boasts several key features including a dual display for simultaneous temperature and humidity readings, a max/min memory for tracking changes, and the GPP readings for moisture analysis. Its digital display is easy to read even from a distance, making it user-friendly. These features combined make it ideal for use in applications ranging from home maintenance to industrial processes where precise environment monitoring is crucial. -
Question:
How accurate are the readings from the EXTECH RH490?
Answer: The EXTECH RH490 offers high accuracy, with temperature sensing capabilities typically within ±1°C and humidity readings within ±2% RH. This level of precision ensures that you can trust the data it provides. In practice, this is particularly important in settings like museums or art galleries, where maintaining specific climate conditions is essential for preserving sensitive materials. -
Question:
Can the EXTECH RH490 be used for industrial applications?
Answer: Absolutely, the EXTECH RH490 is well-suited for various industrial applications. Its ability to provide precise humidity and temperature readings makes it ideal for environments such as manufacturing facilities, HVAC systems, and food processing plants. In these settings, accurate climate monitoring helps ensure product quality and compliance with industry standards. -
Question:
What type of power source does the EXTECH RH490 use?
Answer: The EXTECH RH490 operates on batteries, allowing for portability and ease of use in various locations. Typically, it requires standard AA batteries, which can be easily replaced. This feature is particularly advantageous for fieldwork, where access to power outlets may be limited. Users can conveniently take the device on-site without worrying about cords or power supply. -
Question:
Does the EXTECH RH490 come with any accessories?
Answer: The EXTECH RH490 typically includes a user manual for guidance and may come with a protective case. While it doesn't include extensive accessories, the manual provides valuable insights on maximizing its features. The simplicity of its operation means that you won’t need many additional items to use it effectively, making it straightforward for both beginners and professionals. -
Question:
Is the EXTECH RH490 suitable for home use?
Answer: Yes, the EXTECH RH490 is highly suitable for home use. Homeowners can utilize it to monitor indoor air quality, optimizing conditions for comfort and health. For example, monitoring humidity levels can help prevent mold growth or dry skin, especially in areas with fluctuating seasonal weather. It is a valuable tool for anyone looking to maintain a healthy living environment. -
Question:
Where can I buy EXTECH RH490 - Precision HYGRO-Thermometer with GPP Grains per Pound in Saint Lucia?
Answer: You can buy the EXTECH RH490 - Precision HYGRO-Thermometer with GPP Grains per Pound on Ubuy. The platform provides a convenient shopping experience and a wide range of tools and gadgets, ensuring you can find the exact model you need with ease.
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“The product received very good packaging & safe…Thank You”
16 June 2026 · via Trustpilot
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“Accurate delivery timing given”
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6/7/2026 · via Trustpilot
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12 June 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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XCD 1655
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
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Fastest cross-border delivery
Features & Benefits
- Fast and accurate humidity measurement
- Dual backlit LCD display for easy reading
- Features Data Hold, Min/Max function, and Auto Power Off with disable option
- Slim design with rubberized side grips for improved handling
- Measures various parameters including temperature, humidity, dew point, wet bulb, and mixing ratio
- Comes with carrying case, 9-volt battery, and user manual