Testo Saveris 2 T3

WiFi data logger with display and 2 connections for TC temperature probes

Testo WiFi data logger, Testo Saveris 2 T3 allows you to monitor the temperatures in refrigerated, work- or storerooms. The temperature values measured with the integrated probe are reliably recorded over long periods.

Data is then transmitted directly to the Testo Cloud (online data store) via your wireless LAN. You can access these readings at any time, anywhere, using your internet-enabled smartphone, tablet, or PC.

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  • Features
  • Description
  • Delivery Scope
  • Specification
  • Resources
  • Testo Cloud
  • Video
  • Broad measuring range of -195 to +1350 °C possible thanks to connectable probes (optional)
  • WiFI data logger system with easy installation and operation
  • Call up measurement data at any time via Smartphone, tablet or PC
  • Limit value violation alarms by e-mail or (optionally) SMS

The testo Saveris 2 WiFi data logger system is an easy, versatile, and reliable solution for the measurement and monitoring of temperature values in your storage, refrigerated, and work rooms. Installing the system is child’s play and can be carried out via a browser.

Temperature monitoring with testo Saveris 2 is simple. The temperature monitoring system consists of at least one WiFi data logger and a Cloud access (online data store).

As a component of this data logger system, the testo Saveris 2-T3 temperature data logger with integrated NTC temperature probe stores all measured temperature values and transmits them directly via your WLAN to the Testo Cloud. You can use the alarm function to receive immediate warnings by e-mail or SMS (optional) when limit values are violated.

Current measuring values, limit value violations, and the remaining battery life can be seen in the data logger’s display. The standard batteries (AA) have a lifetime of 12 months and can be replaced at any time by users themselves.

The internal data memory of the WiFi data logger is 10,000 readings and the housing has IP65 protection. The testo Saveris 2-T3 is tested by TÜV Süd according to EN 12830.

  • testo Saveris 2-T3 WiFi data logger
  • Including free Cloud access (basic functionality)
  • Micro USB cable
  • Wall bracket with lock
  • Batteries (4 x AA AlMn Mignon batteries)
  • Short instructions
  • Calibration protocol


Temperature – TC Type K (NiCr-Ni)
Measurement Range -195 to +1350 °C
Accuracy ±(0.5 + 0.5 % of mv) °C
Resolution 0.1 °C
Temperature – TC Type T (Cu-CuNi)
Measuring range -200 to +400 °C
Accuracy ±(0.5 + 0.5 % of mv) °C
Resolution 0.1 °C
Temperature – TC Type J (Fe-CuNi)
Measuring range -100 to +750 °C
Accuracy ±(0.5 + 0.5 % of mv) °C
Resolution 0.1 °C
General Technical Data
Weight 240 g
Dimensions 95 x 75 x 30.5 mm
Operating Temperature -30 to +50 °C
Protection Class IP54
Measuring Rate Dependent on Cloud licence; Basic: 15 min … 24 h / Advanced: 1 min … 24 h
Door Contact N.A.
Communication Rate Dependent on Cloud licence; Basic: 15 min … 24 h / Advanced: 1 min … 24 h
WLAN Connectivity Signal transmission: wireless, frequency band: 2.4 GHz, supported wireless LAN standards: IEEE 802.11 b/g/n and IEEE 802.1X; Possible encryption methods: without encryption, WEP, WPA, WPA2, WPA2 Enterprise – The data loggers communicate via the standard protocol MQTT and are SNTP time synchronization-capable.
Standards EN 12830
Power supply 4 x AA AlMn batteries; mains unit optional; for temperatures below -10 °C please use Energizer batteries 0515 0572
Memory 10,000 measurement values / channel
Battery life 12 months (typical value, depending on the wireless LAN infrastructure) at +25 °C, 15-minute measuring cycle and standard communication cycle at -30 °C, 15-minute measuring cycle and standard communication cycle with Energizer batteries 0515 0572
Storage temperature -40 to +70 °C (without batteries)

The Testo Cloud is the core operating element for setting up your testo Saveris 2 system. Here you can configure your WiFi data loggers, set limit value alarms, and analyze your measurement data.

You can access all measuring values and analysis functions anywhere and at any time with an internet-capable smartphone, tablet, or PC. You must first register at www.saveris.net to have access to the Testo Cloud.

Depending on the range of functions you require, you have a choice between the free Basic and the more extensive Advanced functionality for use of the Testo Cloud:

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