Extech HT30-NISTL with Limited NIST Certificate
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- Heat Stress Index measures how hot it feels when humidity is combined with temperature, air movement, and radiant heat
- Black Globe Temperature (TG) monitors the effects of direct solarradiation on an exposed surface
- Air Temperature (TA) plus Relative Humidity (RH)
- Selectable units of °F and °C
- In/Out Function displays the WGBT value with or without direct sun exposure
- Auto Power Off with override
- Built-in RS-232 interface with optional Windows® compatible software
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Each Unit Includes
- Limited NIST Certification
- Two AAA batteries
