Comark, RF312DUALPLUS, Wireless Dual Channel Data Logger with Thermistor ProbeFeatures:Measurement range -40°F to +257°F / -40°C to +125°CWirelessly stream and view data on the Comark CloudInitial set-up of the data loggers via the free, easy-to-use PC software applicationView and analyze multiple sensors, including graphing of historic dataConfigurable high and low alarms with indicatorCapable of logging greater than 1 million data entriesSensor stores all data even if WiFi is temporarily disconnectedFully featured LCD displaySimple, single button operationLow battery indicatorWiFi connection indicatorUSB 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 BracketThe two probes can measure the environment in which they are situated e.g. one could measure a refrigerator and the other could measure a freezer. This high accuracy data logger is accurate to ±0.4°F (+5°F to +176°F) / ±0.2°C (-15°C to +80°C). The unit comes with a bracket that can be used to mount the data logger on a wall or surface. The probes are connected to the Data Logger via a 160mm Y splitter cable which is provided.Note: The Logger is supplied with two multipurpose test probes. This logger is compatible with the regular RFAXxxxJ probes with the following accuracy specifications ±0.3°C (0°C to +70°C) / ±0.6°F (+32°F to +158°F), please see list of compatible probes below.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.Battery Life and Power SupplyThe 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 (not included). 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.The LCD display includes several features including Max and Min readings and indicators for battery state, alarms, RF312 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 channelSelecting the units of measurementChoosing the sample rate and transmission periodSetting high and low alarm levels for each channelManage Users and LocationsEnjoy an Audit Trail, with detailed reporting, data exporting and notification options, including e-mails and SMS.The RF312DualPlus 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.