Scientific Technologies” Data Dolphin 320 data monitor offers NEMA-6P/IP68 protection for laboratory-grade accuracy in the field. The monitor provides data monitoring and recording in temperatures ranging from -40 C to over 60 C. A good fit for applications such as interconnecting weir monitoring, tidal studies, stream and river monitoring, and remote environmental studies. Four single-ended or differential high precision inputs provide 24-bit digital to analog conversion. Built-in analog and digital filters eliminate the need for external signal conditioning. Four standard precision inputs accept pulse, on/off status, event start/stop, and analog signals with 10-bit digital to analog conversion. Wireless communication options include cellular modem, spread spectrum radio, or WiFi. Standard wired communications are also provided using RS-232 serial connections. Data is stored in a nonvolatile flash memory for worry-free, long-term storage. Data is housed inside a database structure, which allows the adding or deleting of inputs and changing of the sample rate without having to restart the data monitor. Based on an average sampling rate of five minutes on two inputs, it would take well over three years for the DD-320’s memory to reach capacity.