Radio Signal Hygrometer/Thermometer From Dickson

View current, minimum and maximum temperature and humidity readings from up to 25'' on the D850''s large display. The audible alarm tells you when critical conditions have occurred. Use the included remote sensor for wireless monitoring at a second location. Each D850 can display readings from up to 3 remote sensors (A550). Place the main unit at your desk or bench. Place the remote sensor module(s) in chambers, clean-rooms, ducts, storerooms or even outdoors. The remote sensor(s) sends humidity and temperature signals to the main digital display. Provides wireless readings and min/max memories for multiple locations from up to 75 ft away. There is also a high/low alarm feature for one remote channel. The D850 main unit has a large 2.5" x 3" LCD that displays current temperature and humidity and displays temperatures & humidity received on a frequency of 433 MHz from the remote unit.