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Logger Internal + External sensorsLogger Sensor Intern+Extern

Logger Internal + External sensors

Radio data loggers Temperature

Logger Sensor intern+extern
  • Description

  • General

Temperature data logger with
double temperature sensors

The data logger enables you to monitor the ambient temperature. The measurement data is transmitted live by radio to the monitoring workstation, or is stored in the data logger until it is called up wirelessly.

With its two sensors, this logger can simultaneously monitor two different environments:

  • eg refrigerator and outside
  • Top and bottom temperatures in a refrigerator

This logger is available in two variants, depending on the desired sensor response time.

Memory 100 years (flash memory)
Measurement frequency Configurable: every second to every 4 hours.
Storage capacity 32,768 timestamped measurements


Contact inquiry

Contact inquiry

Document download

Technical data

Temperature -40°C … +70°C -40°C … +70°C
2 sensors’ measurement accuracy +/- 0.3°C +/- 0.3°C
Resolution 0.1°C 0.1°C
Radio range in free field Up to 800m Up to 800m
Certification COFRAC or COFRAC-linked on request
Battery lifeapprox 2 years with 15 minute measurement interval
Housing LOG56 and LOG66


Weight inc battery: 250g

Main housing with sensor 1:

  • 96mm x 40mm x 20mm

Cable connection to sensor 2:

  • Cable length: 2 metres
  • Cable diameter: 3.8mm

Sensor 2’s cap:

  • LOG56: fine, metal
  • LOG66: plastic 35 x 35 x 20 mm

Battery: 1/2 AA lithium-thionyl, 3.6 V

Antenna 1/4-wave supplied, unscrewable

Housing: ABS IP54 (non-condensing atmosphere)

Product storage: The device can be configured then set into ‘deep sleep’ mode then stored with its battery. Moving a magnet over the device will reactivate it.