Dwyer DW-USB-2-HA-LCD is a Compact USB Data Logger. It operates on a 3.6V 1/2 AA lithium metal battery, which is included and user-replaceable. The enclosure is made with an ABS plastic blend. It has a memory capacity of 16,382 readings for temperature and RH, as well as 32,764 readings for voltage, current, thermocouple, and carbon monoxide. The sampling rate can be adjusted from 10 seconds to 12 hours for temperature and RH models, 1 second to 12 hours for voltage, current, and thermocouple models, and 10 seconds to 5 minutes for CO models. It is compatible with Windows 7, 8, and 10 operating systems and features programmable high/low alarms and a stop on memory full sampling mode.