Ambient Weather WS-03-3 Compact Indoor Temperature and Humidity Monitor, 3 Pack Monitor temperature and humidity from two different locations! Check comfort conditions in the house at a glance with this compact combination thermometer and humidity gauge from Ambient Weather. Designed for indoor use, the unit features an easy-to-read display with numerical readouts as well as rate of change indicators and comfort index based on the humidity level. Simple and easy to use, no programming required. Includes one year factory warranty from Ambient Weather.