Testo 176H1 - Four-Channel Humidity & Temperature Data Logger

Brand: Testo

The testo 176H1 humidity and temperature measurement logger has a large display that makes it ideal for the monitoring of temperature and humidity in enviro chamber and storage rooms.

The 176H1 is a RH and temperature data logger with external NTC humidity and temperature sensor connections.

Creation of Excel Spreadsheets, PDFs, and data analysis are all easily achieved with the free, downloadable ComSoft software.

The testo 176H1 RH and temperature data logger is an ideal data logger for the monitoring of temperatures and humidity.
  • Professional software with Excel export function for programming the logger and data analysis
  • Record up to two humidity and temperature values simultaneously with optionally connectable probes
  • Temperature measuring range from -20°C to +70°C
  • Easy-to-change battery
  • Automatic measuring data backup when the battery runs out or is changed
  • Displays violations of limit values
  • Data logger with external NTC sensor connections
  • Data transfer possible using the USB port, or SD card (optional)
  • Easy to read large display that shows current reading
  • IP65 protection class
  • Capable of CFR 21 Part 11 Compliancy
  • Free data logger software available for download
  • Data is secured within the logger, and can be password protected using ComSoft



Delivery Scope

  • Testo 176H1 Humidity and Temperature Measurement Logger with External NTC Sensor Connections, Batteries, Certificate of Conformity


  • 7.76 oz. / 220 g


  • 4 x 2 x 1 in. / 103 x 63 x 33 mm

Operating Temperature

  • -4°F to 158°F / -20°C to +70°C


  • Plastic

Protection Class

  • IP65


  • 4 External

Connectable Probes

  • 2 x NTC Temperature Probe or 2 x Humidity Probe

Product Colour

  • Black


  • EU-guideline 2014/30/EU; 2011/65/EU

Measuring Rate

  • 1 s to 24 h; 2 s to 24 h (Online Measurement)

Battery Type

  • 1 x Lithium (TL-5903)

Battery Life

  • 8 years (15 min. meas. rate, +25°C)


  • mini USB, SD Card Slot


  • 2,000,000 Measuring Values

Storage Temperature

  • -40°F to 185°F / -40°C to +85°C

Measuring Range

  • Temperature - NTC: -4°F to 158°F / -20°C to +70°C
  • Humidity - Capacitive: 0 to 100 %rH*
  • *Not for Condensing atmospheres

Accuracy - Temperature NTC

  • ±0.4°F (-4°F to 158°F) ±1 Digit / ±0.2°C (-20°C to +70°C) ±1 Digit
  • ±0.7°F (Remaining Range) ±1 Digit / ±0.4°C (Remaining Range) ±1 Digit

Accuracy - Humidity, Capacitive

  • Dependent on Probe Selected


  • Temperature - NTC: 0.1°F / 0.1°C
  • Humidity - Capacitive: 0.1%rH

  • Monitoring and Documentation of Building Climate
  • Monitoring and Documentation of Storage Temperature and Humidity
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