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| SKU | ddw6818 |
| GTIN | 00793950443002 |
| Brand | Extech |
| Model Number | RH300 |
| Color | Orange |
| Style | Humidity Meter and Dew Point |
| Mounting Type | Tabletop |
| Item Type Keyword | humidity-meters |
| Pattern | Thermometer |
| Dimensions (L x W x H) | 3.1 x 1.9 x 9 inches (7.9 x 4.8 x 22.9 cm) |
| Item Weight | 0.02 kg (0.04 lbs) |
| Package Weight | 0.14 kg (0.31 lbs) |
| Package Dimensions (L x W x H) | 2.9 x 9.6 x 24.5 cm (1.1 x 3.8 x 9.6 inches) |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
This item:
Extech RH300 Digital Psychrometer Humidity Meter -20 to 50°C (14 to 122°F) | Measures RH, Temp, Dew Point, Wet Bulb
17,327
This item
Extech RH300 Digital Psychrometer Humidity Meter -20 to 50°C (14 to 122°F) | Measures RH, Temp, Dew Point, Wet Bulb
17,327
Total price:
26,383
You save 11,164 (30%) Extra3 items selected
3 items
26,383You save 11,164 (30%) Extra
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Precise Environmental Data for Critical Applications
The Extech RH300 Digital Psychrometer is a compact, field-ready instrument designed for precise environmental measurements. It simultaneously displays relative humidity from 10 to 90 percent RH, air temperature from -20 to 50°C (-4 to 122°F), and dew point or wet bulb temperatures. This device is imported from authorized US retailers and authorized brand partners, ensuring you receive an authentic product with all customs duties and GST included.
Advanced functionality includes the calculation of T1-T2 differential (air temperature minus external probe temperature) using an optional probe (TP890), and T2 minus dew point. The unique sensor cap twists to a closed position, protecting the meter during storage and transit. Reviewers note its good value and quick, easy-to-read display, making it a reliable tool for various applications.
For professionals in India needing accurate environmental data, the Extech RH300 offers reliable performance. It operates on 2 x AAA (1.5V) batteries, which are not included. All orders are shipped via ExpressBox with tracking, and all customs duties and GST are pre-paid, providing a transparent and hassle-free purchase experience.
Precision Measurement for Critical Environments
The Extech RH300 Digital Psychrometer delivers accurate readings for relative humidity, air temperature, dew point, and wet bulb, crucial for HVAC, industrial, and environmental monitoring. Its simultaneous display and differential calculation capabilities provide comprehensive data. Sourced directly from authorized US retailers and authorized brand partners, this unit ensures you receive an authentic product, unlike grey-market imports. All customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping, offering peace of mind for your critical applications.
Ideal for Professionals, Consider Alternatives for Basic Home Use
This meter is best suited for professionals in HVAC, industrial settings, or environmental testing requiring precise readings and differential calculations. If you only need a general idea of room humidity for comfort, simpler, less expensive home hygrometers might suffice. Users sensitive to battery requirements should note it uses 2 x AAA batteries (not included). For basic home comfort monitoring, consider dedicated home hygrometers.
Typical situations where Extech RH300 Digital Psychrometer Humidity Meter -20 to 50°C (14 to 122°F) | Measures RH helps — illustrative scenarios, not customer reviews.
HVAC technician in Delhi needs to verify air conditioning performance.
The Extech RH300 measures RH, temperature, and dew point simultaneously, allowing precise calculation of air conditions for system efficiency checks. Its field-ready design and protective cap are ideal for on-site diagnostics.
A researcher in a pharmaceutical lab in Mumbai needs to monitor humidity for sensitive materials.
With ±3% RH accuracy and a wide operating range, the RH300 provides reliable data for maintaining controlled environments. The T1-T2 differential capability aids in complex environmental analysis for research purposes.
| Operating Humidity Range | 10% to 90% RH |
| Temperature Range | -20 to 50°C (-4 to 122°F) |
| Dew Point Range | -68.0 to 49.9°C (-90.4 to 122°F) |
| Wet Bulb Range | -21.6 to 49.9°C (-6.9 to 122°F) |
| Measurement Accuracy | ±3% RH; ±1°C |
| Battery Type | 2 x AAA (1.5V) Alkaline (not included) |
| Included Components | Digital Psychrometer, Sensor Cap |
| Warranty | 1 Year Manufacturer Warranty |
| Cost per use | 1 unit at 1x use = 1 unit: ₹17,327 per unit |
| Shelf life after opening | 12 months (category default for electronic devices) |
| Feature | Extech RH300 Digital | Others |
|---|---|---|
| Measurement Parameters | RH (10-90%), Temp (-20 to 50°C), Dew Point, Wet Bulb, T1-T2 Differential (with probe) | Basic models: RH only. Advanced local: RH, Temp. Differential/Dew Point less common in basic models. |
| Accuracy | ±3% RH, ±1°C | Varies widely; basic models often ±5-10% RH, ±2°C. |
| Field Application Features | Protective sensor cap, Data Hold, Auto Power Off, MAX/MIN/Avg readings | Limited features; often basic display only, no protective cap. |
| Cost per unit | 1 unit: ₹17,327 per unit | Local digital models range from ₹800 - ₹3,500 for basic RH/Temp. |
| Brand Reputation | Extech: Known for test and measurement instruments | Local brands vary; quality and reliability can be inconsistent. |
About Extech
Extech is a recognized leader in test and measurement instruments, providing reliable tools for professionals worldwide.
Compliance & Legal
No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.
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| Attributes | Current |  |  |  |  |  | |
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price |
5,584 7,123 |
3,472 4,980 |
4,377 6,221 |
3,868 5,134 |
3,670 5,197 |
3,424 4,992 |
| Rating | 4.63(8) | 4.50(340) | 4.70(28K+) | 4.63(8) | 4.63(8) | 4.70(56K+) | 4.20(14) |
| Brand Name | Extech | Eagle Abrasives | ACCUSHARP | Weller | ProCase | Bentgo | JoyBros |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
