Extech 445815 Hygro-Thermometer Humidity Alert With Dew Point - Digital Humidity Monitor With Programmable Alarms, Max/Min Memory, And Calibration For

Extech 445580 Humidity And Temperature Pen With Fast Response Sensor, Min/Max Memory, Dual LCD, Pocket-Sized Hygrometer For HVAC, Labs, Storage Rooms,

Extech SD500 Humidity And Temperature Datalogger

Extech 445702 Hygro-Thermometer Clock - Digital Humidity Monitor And Indoor Thermometer With Max/Min Memory, Triple LCD Display, 12/24 Hour Clock, And

Extech 45170 4-In-1 Environmental Meter: Digital Anemometer, Hygrometer, Light Meter, And Thermometer - Pocket Sized Air Velocity, Humidity, And Lux

Extech RH390 Precision Psychrometer With Humidity, Temperature, Dew Point And Wet Bulb - Dual Probe Digital Meter With High Accuracy, Fast Response,