RF311-T Diligence WiFi Data Logger


The WiFi RF311-T Diligence™ Data Logger measures and records the temperature of the environment in which it is situated via an internal sensor.

The Comark Cloud is used to monitor and report on your devices, either at a single location, or at multiple sites around the world. No more missed records, no more time-consuming paperwork! You can access your Comark Cloud account from wherever you are in the world using any internet enabled device, 24 hours a day, 7 days a week.

The Comark Cloud makes the task of continuously monitoring your workplace environments easier, by providing automated temperature and humidity monitoring and associated alerts, in conjunction with your RF300 WiFi devices.

With unlimited storage of your temperature and humidity records. Data can be viewed for multiple locations from anywhere in the world using any internet enabled device.

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

You must first Register with Comark and Create a Cloud Account via their website you will find the link below. You may then setup your loggers quickly and easily with the free with the App (Recommended) or PC software.

Comark Cloud Account Annual Subscription is required with Each RF300 Device.
It is advised to consider where savings may be made using Dual Devies
Purchase the required number of Cloud Account Subscription here

Set up, data logging and data review. Set up features will include data logger name, °C/°F, sample rate, and high/low alarms. 

The RF300 WiFi Data Loggers continuously and discretely monitor temperature and/or humidity to give you accurate readings around the clock, utilising and leveraging your existing WiFi network, to send and store all data to our Comark Cloud service.

The RF311-T has a protection rating of IP55. The data logger is IEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks***.


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

The RF311-T is a low powered battery device. When configured using typical transmission periods (e.g. once every 5 minutes) the data logger will operate for over one year. The battery can then be recharged via a PC or by mains power using the RF320 Power Supply unit, which is available as an accessory.

  • Measurement range -20 to 60°C (-4 to 140°F)
  • Rechargeable internal lithium polymer battery
  • Easy data logger set-up using free PC software application
  • Built in temperature data logger with WiFi capability and integrated display
  • Temperature selection in °C or °F
  • Data can be viewed via the graphing tool or can be exported to Excel
  • Configurable high and low alarms with indicator
  • Wireless connectivity to PC via WiFi
  • Max and Min readings
  • 802.11b compliant
  • Protection rating IP55
  • Capable of logging greater than 1 million data entries
  • Memory stores all data even if WiFi is temporarily disconnected
  • Fully featured LCD segment display
  • 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 wall bracket and micro USB lead

NOTE; Cloud Account Application opens a new browser window to www.comarkinstruments.net 

Download Literature

    HH Solutions Diligence-Wifi-Cloud-RF311-T.pdf



Technical Specifications

Battery LifeTypically *3-6 Months
USB Supply Voltage5V (typical)
Temperature Measurement Range-20 to +60°C / -4 to +140°F
Internal Resolution0.1°
Temperature Accuracy (overall error between +5 and +60°C)±0.3°C
Temperature Accuracy (overall error between -20°C and +60°C)±0.8°C
Temperature Accuracy (overall error between +41°F and +140°F)±0.6°F
Temperature Accuracy (overall error between -4°F and +140°F)±1.6°F
Logging Rate (user configurable)10 seconds to 12 hours
Transmission Period (user configurable)1 minute to 12 hours
Operating Temperature Range-20 to +60°C / -4 to +140°F
Logger DimensionsHeight 97.3mm / 4" x Width 71.3mm / 3" x Depth 26.36mm / 1"
Protection RatingIP55
Wireless TechnologyIEEE 802.11b/g/n
Temperature Selection°C or °F
WiFi ComplianceIEEE 802.11b/g/n compliant, supports WEP, WPA/WPA2 encryption and enterprise networks (MS-CHAPv2, PEAP, EAP-FAST, EAP-TTLS)
Warranty1 Year

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