• RHT510
  • Manufacturer has 38 in stock
    This stock is typically available to ship in 3 - 5 working days.



  • 0.1° max resolution
  • Air temperature
    • 32 to 122°F range
    • ±2.5°F accuracy
  • Type K temperature
    • -148°F to 2372°F range
    • ±0.4% + 1.8°F accuracy
  • Relative humidity
    • 10 to 95%RH range
    • ±4%RH accuracy
  • 22.2 to 120°F wet bulb range
  • -13.5 to 120.0°F dew point range
  • Data hold & min/max functions
  • Auto power off with disable
  • Backlit LCD display
  • CE compliant
  • 1-year warranty

What's in the Box

  • Wrist strap
  • General purpose type K bead wire temperature probe
  • 3 AAA batteries


The Extech RHT510 thermo-hygrometer psychrometer measures relative humidity, temperature, dew point, and wet bulb. It includes the general purpose bead wire type K probe for measuring temperature up to 480°F. The RHT510 can measure temperature up to 2372°F when used with other probes. It features a min/max function that stores and recalls highest and lowest readings.