Extech RH305

The Extech RH305 Hygro Thermometer Psychrometer Kit includes a RH300 humidity meter, external temperature probe, 33% and 75% humidity calibration standards, and batteries. The meter simultaneously displays relative humidity, air temperature, and dew point or wet bulb. It can also measure external temperature using the temperature probe supplied in the kit. The humidity meter itself is compact, making it ideal for field applications. It also has a unique sensor cap which closes to protect meter during storage. Advanced features include data hold, selectable auto power off, and max/min/average reading. The meter can be calibrated in the field using the 33% and 75% humidity bottles supplied in the kit. A hard case is included for storing the calibration bottles when not in use.