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Item #:
223634944
EXTECH RH490 - Precision HYGRO-Thermometer with GPP (Grains per Pound)
85% of respondents would recommend this to a friend
Item #:
223634944
BTN 57694
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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In stock
Imported from USA store
QTY:
Only 4 items left in stock.
Order now and get it around Wednesday, November 04
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Our Top Logistics Partners
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.
What Stands Out
Precision Accuracy
With a 2% accuracy in relative humidity readings, the EXTECH RH490 ensures reliable performance, ideal for professionals requiring precise measurements in various environments.
Dual Display
The dual display feature allows simultaneous viewing of humidity and temperature, providing convenience for users who need to monitor multiple parameters at once.
Multiple Measurements
This device measures dew point, wet bulb, and grains per pound, making it versatile for applications in HVAC, agriculture, and laboratory settings, effectively addressing users' diverse measurement needs.
Product Details
| Color | Green |
| Brand | Extech |
| Item Weight | 0.2 kg |
| Battery Description | 1 x 9V battery |
| Mounting Type | Surface Mount |
Who Should Buy?
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HVAC Professionals
Ideal for HVAC technicians to measure humidity levels and ensure optimal climate control in buildings.
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Industrial Use
Beneficial for industrial settings to monitor and maintain humidity levels in critical processes and environments.
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Residential Use
Great for homeowners seeking to manage humidity and comfort levels for health and comfort in living spaces.
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Outdoor Use
Not suitable for outdoor conditions without protection as it may not withstand harsh weather environments.
Product Description
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Customer Questions & Answers
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How to Shop EXTECH RH490 - Precision HYGRO-Thermometer with GPP Online From Ubuy?
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Is EXTECH RH490 - Precision HYGRO-Thermometer with GPP Available to Shop Online in Bhutan?
Answer: Yes, at Ubuy Bhutan this product is available for you to shop at a reasonable price. The EXTECH RH490 - Precision HYGRO-Thermometer with GPP is not available locally but you can trust us with our express shipping services. -
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How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
Extech Hygrometers Editorial Review
EXTECH RH490 - Precision HYGRO-Thermometer with GPP (Grains per Pound) offers an essential feature set for users needing accurate measurements in various environmental conditions. This device displays RH, temperature, dew point, wet bulb, and grains per pound, making it highly versatile. However, there are concerns regarding the durability of the sensor chip, as users have reported issues with it breaking off after frequent use. Some techs appreciate its accuracy and performance, indicating it is a top choice in the market, yet others have faced challenges with longevity in demanding environments.
Customer Reviews & Ratings
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Pros
- Accurate RH measurements with 2% accuracy
- Multiple measurement options including dew point
- Compact design with a carrying case
- User-friendly dual display feature
- Includes 9V battery for immediate use
Cons
- Durability of the sensor chip may be an issue
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Important information
- 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.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
BTN 57694
Order now and get it around Wednesday, November 04
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.)
QTY:
Only 4 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
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
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