The Monitoring Mode function allows for receiving signals from the attached probe to be recorded to the instrument's non-volatile internal memory. The NHT 3DL can analyze and store complex waveforms with transitory and pulse characteristics. This saved data can then be downloaded to a PC in order to extract relevant information acquired during the monitoring. Battery power allows the user to perform monitoring tasks for at least 24 hours. NHT 3DL can be entirely controlled remotely via fiber optic or wireless (Wi-Fi) connections. Outdoor monitoring in all weather conditions can be carried out, due to the NHT 3DL's IP67 enclosure.