More Views


Portable Thermohygrometer


Availability: Ships within 1-2 Business Days

FREE Shipping*

*Applies to 48 contiguous United States. Standard UPS Ground shipping. No promo code needed. Exclusions may apply.
HI9564 is a portable thermohygrometer designed to provide peak performance in harsh environments. Measurements of temperature and relative humidity are made easy with the rugged, water-resistant housing of the meter and durable casing of the HI70602 probe. HI9564 features an auto-off function after 20 minutes of inactivity, temperature readings in both Celsius and Fahrenheit, and on-screen messages to direct procedures and indicate potential errors.
  • ABS body RH probe with built-in microchip
  • °C/°F temperature readout
  • 250-hour battery life with battery level indicator


Thermo-hygrometer HI9564


Hold Button

A simple press of the HOLD button allows you to freeze a measurement on the LCD screen. Even in HOLD mode, the meter channels can still be scrolled through to show the status of the meter when HOLD was pressed.


Low Battery Indicator

The included batteries provide 10,000 hours of continuous use. When the battery level is below 10%, a warning symbol will blink to indicate low battery condition. When low battery power may affect your results, the meter will shut down to avoid erroneous readings caused by low battery level.


Automatic Shut-off

The auto-off feature can be set to shut the meter off at 8 or 60 minutes, or it can be disabled so that the meter continuously stays on. The auto-off feature prolongs battery life for peace-of-mind and energy savings if the meter is accidentally left on.


Built to be Durable

Designed to withstand the knocks, drops, and spills of real life, the new IP67 body ensures top performance in any environment. These meters are protected against dust and water intrusion from any direction.


Portable Design

Made to fit comfortably in your hand for on-the-go testing, the multilevel LCD display provides at-a-glance readings of relative humidity (RH) and temperature from any angle and dual button operation streamlines the testing process for any user. 


Quick Connect Probe

A Quick Connect DIN connector makes attaching and removing the probe simple and easy. The rubber coating protects the cable and provides a water-tight seal without twisting. The connection is located at the base of the meter so that wires are out of the way when you measure.



Your measurements require detailed attention; so should your electrode. HI9564 is supplied with HI706023 RH/temperature probeThe HI706023 is a thin-film polymer capacitive (TFPC) sensor that accurately measures relative humidity and temperature. Encased in a durable ABS housing, the probe features a perforated cap to allow for better sample interation for more accurate measurements. 

Smart Probe

The HI706023 RH/temperature probe is a “smart probe” meaning that it has an electronic sensor that tracks the probe's performance and stores the calibration history directly onto the probe.


Wide Measuring Range

As compared to the previous model, the HI706023 is more accurate with a wider RH range, able to measure from 0.0 to 100.0 % RH.


No Need to Calibrate

To make testing even easier, the HI706023 probe come factory calibrated and requires no user calibration.

HI9564 Models

HI9564 Models

Old HI9564 (Left)

  • Uses the HI70602 RH/temperature probe with DIN Connector

New HI9564 (Right)

  • Uses the HI706023 RH/temperature probe with Quick DIN Connector


RH Range 0.0 to 100.0 % RH
RH Resolution 0.1% RH
RH Accuracy ±2.5 % RH (0 to 90 % RH); ±3.5 % RH (90 to 100 % RH);
Temperature Range -10.0 to 60.0°C / 14.0 to 140.0°F
Temperature Resolution 0.1°C / 0.1°F
Temperature Accuracy ±0.4 °C / ±0.8 °
Electrode/Probe HI706023 RH/temperature probe
Battery Type/Life 1.5V AAA / approximately 10,000 hours of continuous use
Environment 0 to 60°C (32 to 140°F); RH max 98% non-condensing
Dimensions 154 x 63 x 30 mm (6.1 x 2.5 x 1.2”)
Weight 196 g (6.91 oz.)
Ordering Information HI9564 is supplied with HI706023 RH/temperature probe, 1.5V AAA batteries (3) and instruction manual.
Warranty 2 years