Extech Hygro-Thermometer Psychrometer RHT510


Price $119.99
Est Delivery in 1-2 weeks after ordering

Frequently Bought Together

Please choose Options for all selected Products

Extech Test & Measurement

Measures Relative Humidity, Temperature, Dew Point, and Wet Bulb

Conveniently check the Humidity and Temperature conditions in residential and professional settings to ensure comfort and safety. The RHT510 is a Hygro-Thermometer Psychrometer that measures Relative Humidity, Temperature, Dew Point, and Wet Bulb. General purpose bead wire Type K probe is included for measuring Temperature up to ~480°F (250°C), while the meter can measure to 2372°F (1300°C) if used with other probes. Min/Max function stores and recalls highest and lowest readings. Additional features include: large LCD display with backlight, Data Hold and Auto power off with disable option.


  • Measures Temperature (Air/Type K), Relative Humidity, Wet Bulb, and Dew Point
  • Backlit LCD to view in dimly lit areas
  • Data Hold and Min/Max functions
  • Auto power off with disable
  • Tripod mount (optional TR100 Tripod sold separately)
  • Complete with wrist strap, general purpose Type K bead wire Temperature probe, and 3 AAA batteries


  • Temperature (Air): 32 to 122°F (0 to 50°C) | 0.1° | ±2.5°F (1.2°C)
  • Temperature (Type K): -148°F to 2372°F (-100°C to 1300°C) | 0.1° | ±0.4% + 1.8°F (1°C)
  • Relative Humidity: 10 to 95%RH | 0.1%RH | ±4%RH
  • Wet Bulb: 22.2 to 120°F (-5.4 to 49.0°C) | 0.1° | calculated
  • Dew Point: -13.5 to 120.0°F (-25.3 to 49.0°C) | 0.1° | calculated
  • Dimensions: 6 x 2.3 x 1" (153 x 58 x 25mm)
  • Weight: 5.6oz (160g)