WiFi Dual Channel Data Logger with Thermocouples

Part No: RF314Dual (4808985)

£230.95 (ex. VAT)

The RF314Dual Diligence WiFi Dual Channel Data Logger with two removable Thermocouple probes can measure two Air or Product Temperatures with a single logger. Data is transmitted wirelessly via your WiFi network to the Comark Cloud.

  • Temperature range: -270°C to +1372°C / -454°F to +2501°F (probe dependent)
  • Simple installation using your existing WiFi network
  • Supplied with two removable 3m thermocouple probes, a micro USB lead and wall bracket
  • Comark Cloud charges apply
  • Warranty: 1 Year


RF314Dual WiFi Dual Channel Data Logger with Thermocouples

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.

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. If the data logger temporarily loses connectivity with the network, it will log readings until the connection is re-established (max 30 days at 10 second sample interval).

The Comark Cloud Dashboard is your new online Home for your Loggers and provides easy access to the critical information regards your system, including; the status of your favourite devices at a glance, review recent device events, view data and clear alerts, quickly navigate to the detail on all your devices.

Simply log on to the Comark Cloud Dashboard via your PC, Tablet or Phone.

Setup your loggers quickly and easily with the free PC software, after which all configuration is handled from the Cloud. See the Downloads section, under the Support Tab.

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 two Thermocouple Probes, is a low power device containing a rechargeable battery. When configured, the data logger can operate for up to six months*. The battery can be recharged via a standard +5V wall adapter RF320 (UK/US) 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.


From the Comark Cloud Dashboard 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
  • Manage Users and Locations

Enjoy an Audit Trail, with detailed reporting, data exporting and notification options, including e-mails and SMS**

The RF314-TH has a protection rating of IP40 and the probes IP67. The data logger is IEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks***.


  • Measurement range -270°C to +1372°C / -454°F to +2501°F
  • Rechargeable internal lithium polymer battery
  • Initial set-up of the data loggers via the free, easy-to-use PC software application
  • Dual channel recording through two external thermocouple probes
  • Wirelessly stream and view data on the Comark Cloud
  • View and analyze multiple sensors, including graphing of historic data
  • Configurable high and low alarms with indicator
  • Data Logger memory stores all data even if WiFi is temporarily disconnected
  • Fully featured LCD display
  • Simple, single button operation
  • Low battery indicator
  • WiFi connection indicator
  • USB port used for recharging (can only be recharged when the unit is between 0 to +40°C / +32 to +104°F)
  • Supplied with removable High Accuracy thermistor probes, micro USB lead and Wall Bracket


**SMS via E-mail to SMS service such as TextMagic™ (www.textmagic.com)

*Battery Life and Power Supply
The product will arrive partly charged, but ideally you should charge it for 24 hours before use for optimum performance. The battery can be recharged (unit must be between 0°C to +40°C / +32°F to 104°F) via a PC, a USB +5V wall adapter RF320 (UK/US), or a portable USB battery pack using the USB lead provided. It can also be permanently powered by the RF320 USB wall adapter. Readings may be affected while the internal battery is being charged. However, once charged, continued connection of the charger will have no effect.

Battery life is dependent on: transmission period, WiFi encryption method, WiFi encryption key rotation frequency (determined by the router/access point), signal strength between router/access point and WiFi device, presence volume and type of WiFi traffic from other devices, sample rate and operating temperature.

For more information on Battery and WiFi Considerations please read our Product Information Bulletin for RF300.

Please contact us if you want more information on the battery life of RF300 Transmitters and how to maximise it.
Apply for a Comark Cloud Account Today!

Technical Specifications

Sensor TypeThermocouple
Battery LifeTypically *3-6 Months
USB Supply Voltage (Typical)4.5 to 5.5 Vdc
Temperature Measurement Range-270°C to +1372°C / -454°F to +2501°F
Operating Temperature Range-20°C to +60°C / -4°F to +140°F
Temperature accuracy (Logger Only)±1.5°C / ±3.0°F
Temperature Measurement Resolution0.1°C / 0.2°F
Temperature Display Resolution0.1°
Logging Period (User Configurable)10 seconds to 12 hours (Typical 10 minutes)
Transmission Period (User Configurable)1 minute to 24 hours (Typical 1 hour)
Logger DimensionsHeight 82mm / 4" x Width 70mm / 3" x Depth 36mm / 1"
WiFi ComplianceIEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks (MS-CHAPv2, PEAP, EAP-FAST, EAP-TTLS)
Supported ProbesK,N, J and T Type Probes with 2-Pin Sub Miniature Connector
Supplied Probe Dimensions1.5m Cable, 75mm x 5mm Shaft
Supplied Probe Measurement Range-40°C to +200°C / -40°F to +392°F
Supplied Probe Accuracy+/-2.5°C
Warranty1 Year

Articles / FAQs

Help with Troubleshooting Common Issues 7th December 2016
Help checking my comark.wifisensorcloud.com Server Settings 27th March 2015
Help with Restart or Factory Reset 27th March 2015
Help with updating the firmware of my RF300 Data Loggers 27th March 2015
Help with Completely uninstalling the Diligence WiFi Sensor Software 27th March 2015
Help with finding the Firmware Version of your RF300 Data Logger 27th March 2015
Help with McAfee All Access Software 27th March 2015
Help with Network Requirements and Settings 26th March 2015
Help with Windows Firewall 26th March 2015
Help with Symantec Firewall 26th March 2015
Help with ZoneAlarm Firewall 26th March 2015
Battery Life Expectation 24th March 2015