Multiple readings from one device! This well-designed thermometer features a dual display for temperature (°C/°F) and for humidity (%). It also includes a mini probe with a 3 meter (9 foot) cord that can be used to display the temperature and humidity in a second zone. The memory can display the minimum/maximum temperatures as well as humidity records, and a freeze alert is included. The device has a display resolution of 0.1° temperature, 1% humidity. The thermometer uses one 1½ volt battery (included). This precision instrument is GLOBE approved. Complete instructions are provided.