Product review (5 stars): AMPROBE'S OUTSTANDING TEMPERATURE-RELATIVE HUMIDITY METER
Five ACCURATE Stars! The Amprobe THWD-1 Relative Humidity and Temperature Meter is an excellent professional-grade and home use digital thermometer and hygrometer. This looks similar to the meter used by my HVAC repairman. It measures temperature and relative humidity in large black numbers on a 1 2/3 inch x 1 inch liquid crystal display. It is 9 1/2 inches long of which 2 1/2 inches is a tapered probe, and it weighs in at 6.3 ounces. This multi-faceted meter displays temperature and relative humidity percentage in a continuous readout in either Fahrenheit or Celsius and it is so sensitive the readings immediately change as it is taken from area to area, which is why it has a `hold' button. The 2 1/2 inch small cylindrical tip can be inserted into ducts or other tight places for an immediate temperature/humidity readout. The meter features an "on/off" button, as well as dew point and wet bulb button, a "min/max" button to store minimum and maximum readings in memory, and a C and F button. It has a 30 minute "auto power off" function which can be disabled with the "hold" button. This is an excellent digital thermometer (-4F to 140F) and hygrometer (0-100%) with extra features. Highly Recommended. Five EXCELLENT Stars (Amprobe THWD-1 meter, D-cell battery, User Manual, and carrying case with belt loop. I year limited warranty)