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Extech Instruments Precision Humidity Meter — Model# RH390
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Extech Instruments Precision Humidity Meter — Model# RH390

Item# 163946

Only $199.99
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Factory Shipped —
Estimated Delivery: 8 - 13 Business Days
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Not Available in Stores

Manufacturer's Warranty: 12 months parts / 12 months labor

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Product Summary

The Extech precision humidity meter features simultaneous displays of humidity/temperature, humidity/dew point or humidity/wet bulb on its display.

What's Included

  • (1) Meter
  • (1) 9V battery
  • (1) Carrying case

Features + Benefits

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  • Fast 30-second response time
  • Slim design
  • Rubberized sides for better grip and one-hand operation
  • Data hold and min./max functions

Key Specs

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Item#163946
Ship Weight1.7 lbs
StyleNonpenetrating sensor
Resolution0.1%RH, 0.1°F/°C
Functions (qty.)6
Accuracy±2%RH, ±1.8°F/1°C
Low Battery IndicatorYes
Battery IncludedYes
Battery Type9V
Backlit DisplayYes
Display TypeDual display
Auto On/OffYes
Dimensions L x W x H (in.)7 13/16 x 1 11/16 x 3
Case IncludedYes

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Product Question + Answer

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
12 months parts / 12 months labor

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Extended Warranty Replacement Plan
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Only $24.99
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Extended Warranty + Accidental Damage Replacement Plan
Only $19.99
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Only $34.99
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Hide Similarities
Style Electrode pin style Nonpenetrating sensor Nonpenetrating sensor Electrode pin style Combination
Range Selection 6–44% 0–99% - 9–30% 0–99.9 (relative)
Resolution - 0.1% 0.1%RH, 0.1°F/°C 0.1% 0.1%
Functions (qty.) - - 6 - -
Accuracy ±1% - ±2%RH, ±1.8°F/1°C ±(4%+5d at 9-24%) -
Measures up to (in.) - Measurement depth to 0.75 in. below surface - - 0.75 in. (22mm) below the surface
Low Battery Indicator Yes Yes Yes - Yes
Battery Included Yes Yes Yes Yes Yes
Battery Type CR2032 lithium battery 9V 9V 9V 9V
Backlit Display - Yes Yes - Yes
Display Type Dual digital, bar graph display LCD Dual display LCD digital display Digital LCD
Auto On/Off Yes - Yes Yes Yes
Dimensions L x W x H (in.)
5 1/8 x 1 5/8 x 1 5 7/16 x 2 13/16 x 1 1/8 7 13/16 x 1 11/16 x 3 7 x 3 x 1 2 1/3 x 1 3/4 x 8
Case Included Pouch Yes Yes Yes Yes