Testo 160 THL

Wi-Fi data logger with internal temperature, humidity, lux, and UV radiation sensors

  • Data logger with internal sensors for temperature, humidity, cumulative lux, and UV exposure level recording

  • Optional paintable logger cover helps conceal the logger in an exhibit
  • Logger sends data to the Testo Cloud using your existing Wi-Fi network, alarms by email (Basic License), and optional text messages with the Advanced License
  • Simple to install, integrate, and operate

Monitor your exhibits and archives with the testo 160 THL Wi-Fi data logger. The testo 160 THL ambient conditions logger comes with internal temperature, humidity, lux, and UV sensors to deliver reliable monitoring of the ambient climate and cumulative light exposure in museums and archives.

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  • Description
  • Delivery Scope
  • Specification
  • Resources
  • Applications

The testo 160 THL is a part of the testo 160 data logger family developed specifically for the needs of museums.  This system allows for configuring internal sensors and external probes, to match any monitoring situation in a museum or archival setting.
The logger data is accessible at any time from any browser-enabled device, such as a smartphone, tablet, PC, or Mac.

Monitoring temperature, humidity, illuminance, and UV radiation with the testo 160 THL Wi-Fi data logger
The testo 160 THL Wi-Fi data logger provides a complete, single-instrument solution for monitoring humidity, temperature, illuminance, and UV, from a single mounting point location.  One discretely mounted instrument will record four important environmental factors that affect the material integrity and color of displayed artwork or historical objects.

The testo 160 THL Wi-Fi data logger – unobtrusive and easy to hide
So as not to distract from your art exhibit, the testo 160 THL logger was made small, about 2.5×3.6×0.95 inches. To make it easy to conceal in an exhibit or a display case, an optional paintable deco cover is available to help the logger blend in with its surroundings.

A perfect network appliance – uses an existing Wi-Fi network to send data to the Testo Cloud
The Testo Cloud is a central data repository for your testo 160 THL data loggers.  On your Testo Cloud account, you can configure data loggers and set alarm points, designate authorized users, and set recipients for alarms and monitoring reports.
To start, register at www.museum.saveris.net to gain access to your account.  To register you can use a normal web browser.
Depending on your needs, you can select between the free Basic or subscription-based Advanced functionalities as needed, to create 10 user accounts, or add text messaging of alarms, for example.

Museum, archive, and storage applications for the testo 160 THL Wi-Fi data logger
Measure and collect temperature, humidity, lux, and UV exposure data on an exhibit room or storage area reliably and without interruption.  The professional testo 160 THL Wi-Fi data logger is optimized for monitoring applications of ambient conditions in museums, galleries, and archives.

Additional functionality of the testo 160 THL Wi-Fi data logger
The logger comes with a large internal memory for 40,000 measurement values to protect your data, in case of a blackout or Wi-Fi network issues.  The logger housing has IP20 moisture protection and uses readily available, standard alkaline batteries.  The batteries are monitored and should last for about 12 months.  The logger can also be powered by an external USB power supply, and in such a case, the batteries will be used only during a loss of power.

  • Testo 160 THL Wi-Fi data logger
  • Includes free Cloud access (Basic License)
  • Batteries (4 x AAA alkaline)
  • USB cable
  • Wall bracket with unlocking key and adhesive strip
  • QR code sticker
  • Basic instructions
  • Factory calibration document


Humidity – Capacitive
Measuring Range 0 to 100 %rH (non-condensing)
Accuracy ±2.0 %rH at +77°F and 20 to 80 %rH / ±2.0 %RH at +25 °C and 20 to 80 %RH
±3.0 %rH at +77°F and < 20 and > 80 %rH / ±3.0 %RH at +25 °C and < 20 and > 80 %RH
±1.0 %rH hysteresis
±1.0 %rH / year drift
Resolution 0.1 %rH
Measuring Range -10 to +50 °C
Accuracy ±0.5 °C
Resolution 0.1 °C
Measuring range 0 to 20000 Lux
Accuracy DIN 5032-7 Class C-compliant.
±3.0 Lux or ±3.0 % of mv refers to reference DIN 5032-7 Class L)
Resolution 0.1 Lux
Measuring range 0 to +10000 mW/m²
Accuracy ±5 mW/m² or ±5 % of mv (refers to external reference)
Resolution 0.1 mW/m²
General technical data
Weight 4 oz. / 113 g
Dimensions 4 x 3 x 1 in. / 92 x 64 x 24 mm
Operating temperature 14° to 122 °F / -10 to +50 °C
Protection class IP20
Measuring Rate Dependent on Cloud licence; Basic: 15 min … 24 h / Advanced: 1 min … 24 h
Communication Rate Dependent on Cloud licence; Basic: 15 min … 24 h / Advanced: 1 min … 24 h
WLAN Connectivity supported wireless LAN standards: IEEE 802.11 b/g/n and IEEE 802.1X; Possible encryption methods: WPA2 Enterprise: EAP-TLS, EAP-TTLS-TLS, EAP-TTLS-MSCHAPv2, EAP-TTLS-PSK, EAP-PEAP0-TLS, EAP-PEAP0-MSCHAPv2, EAP-PEAP0-PSK, EAP-PEAP1-TLS, EAP-PEAP1-MSCHAPv2, EAP-PEAP1-PSK, WPA Personal, WPA2 (AES), WPA (TKIP), WEP
Battery life 1.5 years
Power Supply 4 x AAA batteries 1.5 V, alternatively mains unit via USB connection
Memory 32,000 Measuring values / Sum of all channels
Storage temperature -20 to +50 °C
Checking and documenting ambient conditions in an exhibit room

Paintings, sculptures, and other displayed items may be damaged by an unsuitable exhibit room climate.  Microcracks and fissures, which gradually grow larger, are the consequences of an unsuitable or highly fluctuating ambient climate.  With the testo 160 series Wi-Fi data loggers, you can always monitor the key parameters of temperature and relative humidity.

As loan items are often exhibited, loan agreements often require documentation of an exhibit’s ambient environment.  The testo Cloud data storage can allow lenders to view current climate conditions at any time.  Testo 160 loggers can be paired with optional paintable covers, to allow for concealment within an exhibit space.

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