RF314Dual WiFi Dual Channel Data Logger With Thermocouples

The RF314Dual WiFi Dual Channel Data Logger with Thermocouples provides dual channel recording through two external thermocouple probes.

  • Temperature Measurement Range: -270°C to +1300°C / -454°F to +2372°F

  • Plug & Play Installation using existing WiFi Network

  • Supplied with two removable 3m Thermocouple Probes and Micro USB lead

Availability: In stock


The RF314Dual WiFi Dual Channel Data Logger with Thermocouples provides dual channel recording through two external thermocouple probes.

The RF314Dual data logger measures the temperature of the environment in which the probes are situated. This data logger is typically accurate to ±1.5°C (with the K type probes supplied). It is freestanding, but can be attached to a wall or surface using the bracket provided and can be clipped in and out as required. The probes are connected using the industry standard miniature thermocouple connector, which allows alternative K, N, J and T type probes to be used.

The Thermocouples can be used in a wide range of extreme temperature situations e.g. manufacturing processes, cold storage and hot storage.

Data is streamed wirelessly to either the Comark Cloud or a local PC. During configuration the data logger will search for an existing wireless network whilst physically connected to the PC. Once connected it can then be placed anywhere within range of the network. If the data logger temporarily loses connectivity with the network or PC, it will log readings until the connection is re-established (max 30 days at 10 second sample interval).

Although the Diligence WiFi data loggers have an impressive range this can be increased by using WiFi extenders.

The RF314Dual WiFi Dual Channel Data Logger with Thermocouples is a low power device containing a rechargeable battery. When configured using typical sample and transmit periods the data logger can operate for up to six months. The battery can be recharged via a standard +5V wall adapter or a USB port using the cable provided.

The LCD display includes several features including Max and Min readings and indicators for battery state, alarms, WiFi connection and signal strength.

With our free PC software you can choose to store your logger data either locally on a single PC, or make it universally accessible on the Comark Cloud. Whichever you choose, you’ll be able to analyse data, draw graphs and export the latest and historic data in various formats.


You can change the data logger’s settings to suit your needs, options include:

  • Assigning names to the data logger and each measuring channel.
  • Selecting the units of measurement.
  • Choosing the sample rate and transmission period.
  • Setting high and low alarm levels for each channel.

Once configured, data logger settings can be changed remotely, without the need to reconnect it to your PC. The RF314Dual has a protection rating of IP43 and the probes IP67. The data logger is IEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks**.

*Please refer to specification for details


  • Dual channel recording through two external thermocouple probes
  • Wirelessly stream and view data on the Comark Cloud or on a PC
  • Data Logger set up is easy using our free PC software
  • View and analyze multiple sensors, including graphing of historic data
  • Measures temperature range -270°C to +1300°C / -454°F to +2372°F (probe dependent)
  • Configurable high and low alarms with indicator
  • Data Logger memory stores data even if WiFi is temporarily disconnected

Upgraded WiFi Loggers (July 2016)

Comark has upgraded the Diligence WiFi Data Logger range from ‘B’ (IEEE 802.11b) to ‘BGN’ (IEEE 802.11b/g/n) WiFi compatibility.

One of the major benefits of the switch to type ‘BGN’ WiFi is that it speeds network communications. IT departments in many schools and hospitals have been turning off ‘B’ compatibility to improve network speeds, so ‘BGN’ devices are often all that they will consider for new network devices.

Plus there are a number of other improvements to the Loggers:

New LCD on all Loggers

RF300 loggers now have a new two-Line LCD and a new LCD surround. The new segment battery indicator shows the charge on the battery all the time.

Improved Display Resolution

RF313-TH WiFi Temperature and Humidity Data Logger now shows temperature to 0.1°C & 0.1°F.
RF314-TC WiFi Temperature Data Logger with Thermocouple Probe now shows temperature to 0.1°C above 1000°C and below -100°C

How do I tell them apart from the old versions?

Telling them apart is straightforward. The part number for the logger can be found on the rear of the logger along with the MAC Address which, for all ‘BGN’ enabled products is 98:8B:AD:20:00:00 -> 98:8B:AD:2F:FF:FF

Still have questions or need advice?

Please contact us.


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