Extech RH390 Precision Psychrometer, Humidity, Dew Point, Wet Bulb

Product description

• Professional Precision in Every Reading – Measures relative humidity, ambient temperature, dew point, and wet bulb with high accuracy, giving technicians confidence in every inspection or field test.
• Dual Probe Advantage for Versatility – Includes both built-in and external probes for simultaneous readings in multiple locations, making it ideal for HVAC diagnostics, laboratories, and building inspections.
• Fast Response Time That Saves You Work Hours – Designed with advanced sensors to deliver rapid, stable results in seconds so you spend less time waiting and more time troubleshooting and reporting.
• Clear Display for Smarter Decisions – Large backlit LCD shows multiple parameters at once, even in dim conditions, helping professionals quickly compare values without juggling separate devices.
• Rugged, Portable, and Ready for the Field – Compact handheld design with protective case ensures durability, while battery power and data hold functions make it convenient for on-site and outdoor use.